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Corticosteroid (CS) injections may worsen progression of knee osteoarthritis as seen on radiography and whole-knee MRI. Injecting hyaluronic acid (HA) instead, or managing the condition without injections, may better preserve knee structure and cartilage, according to results of two related studies presented at the annual meeting of the Radiological Society of North America.

The findings come nonrandomized, observational cohort studies, leading knee OA experts to call for further study in randomized trial settings. In the meantime, shared decision-making between patients and clinicians is advised on the use of these injections.

For knee OA, most patients seek a noninvasive treatment for symptomatic relief. “At least 10% of these patients undergo local treatment with injectable corticosteroids or hyaluronic acid,” the lead author of one of the studies, Upasana Upadhyay Bharadwaj, MD, research fellow in musculoskeletal radiology at the University of California, San Francisco, said in a video press release.

Researchers in both studies used data and images from the Osteoarthritis Initiative (OAI), a multicenter, longitudinal, observational study of 4,796 U.S. patients aged 45-79 years with knee OA. Participants were enrolled from February 2004 to May 2006.

The OAI maintains a natural history database of information regarding participants’ clinical evaluation data, x-rays, MRI scans, and a biospecimen repository. Data are available to researchers worldwide.
 

Two studies draw similar conclusions

In one study, Dr. Bharadwaj and colleagues found that HA injections appeared to show decreased knee OA progression in bone marrow lesions.

They investigated 8 patients who received one CS injection, 12 who received one HA injection, and 40 control persons who received neither treatment. Participants were propensity-score matched by age, sex, body mass index (BMI), Kellgren-Lawrence (KL) grade, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Physical Activity Scale for the Elderly (PASE).

The researchers semiquantitatively graded three Tesla MRI scans that had been obtained at baseline, 2 years before the injection, and 2 years after the injection, using whole-organ MRI score (WORMS) for the meniscus, bone marrow lesions, cartilage, joint effusion, and ligaments.

They quantified OA progression using the difference in WORMS between baseline and 2-year follow-up, and they used linear regression models, adjusted for age, sex, BMI, KL grade, WOMAC, and PASE, to identify the link between type of injection and progression of WORMS.

At 2 years, the authors found a significant association between CS injection and postinjection progression of WORMS over 2 years for the knee overall, the lateral meniscus, lateral cartilage, and medial cartilage. There was no significant link between HA injection and postinjection progression of WORMS or between either injection type and progression of pain, as quantified by WOMAC. There was also no significant difference in progression of WORMS over the 2 years prior to injection for CS and HA injections.

“Corticosteroid injections must be administered with caution with respect to long-term effects on osteoarthritis,” Dr. Bharadwaj advised. “Hyaluronic acid injections, on the other hand, may slow down progression of knee osteoarthritis and alleviate long-term effects while offering similar symptomatic relief to corticosteroid injections. Overall, they are perhaps a safer alternative when looking at medium- and long-term disease course of knee osteoarthritis.”

In the second study, lead author Azad Darbandi, MS, a fourth-year medical student at Chicago Medical School, North Chicago, and colleagues found that patients who received CS injections experienced significantly more medial joint space narrowing.

They identified 210 knees with imaging at baseline and at 48 months that received CS injections, and 59 that received HA injections; 6,827 knees served as controls. The investigators matched 50 patients per group on the basis of confounding factors, which included age, sex, BMI, comorbidities, surgery, and semiquantitative imaging outcomes at baseline. They performed ANCOVA testing using 48-month semiquantitative imaging outcomes as dependent variables and confounding variables as covariates.

The researchers analyzed joint space narrowing, KL grade, and tibia/femur medial/lateral compartment osteophyte formation and sclerosis.

At 4 years, the average KL grade in the CS group was 2.79, it was 2.11 in the HA group,;and it was 2.37 in the control group. Intergroup comparisons showed significant differences in KL grade between CS and HA groups and between CS and control groups. Medial compartment joint space narrowing was 1.56 in the CS group, 1.11 in the HA group, and 1.18 in controls. There was a significant difference between the CS and control groups. Other dependent variables were not significant.

“These preliminary results suggest that corticosteroid injections accelerated the radiographic progression of osteoarthritis, specifically medial joint space narrowing and Kellgren-Lawrence grading, whereas hyaluronic acid injections did not,” Mr. Darbandi said in an interview.

“OA radiographic progression does not always correlate with clinical progression, and further research is needed,” he added.

Proper matching of patients at baseline for confounding factors is a strength of the study, Mr. Darbandi said, while the retrospective study design is a weakness.
 

Experts share their perspectives on the preliminary results

Michael M. Kheir, MD, assistant professor of orthopedic surgery at the University of Michigan Health System, who was not involved in the studies, said he would like to see further related research.

“Perhaps steroid injections are not as benign as they once seemed,” he added. “They should be reserved for patients who already have significant arthritis and are seeking temporary relief prior to surgical reconstruction with a joint replacement, or for patients with recalcitrant pain after having already tried HA injections.”

William A. Jiranek, MD, professor and orthopedic surgeon at Duke Health in Morrisville, N.C., who also was not involved in the studies, was not surprised by the findings.

“It is important to do these studies to learn that steroid injections do not come with zero cost,” he said.

“I am pretty sure that a percentage of these patients had no cartilage loss at all,” he added. “We need to understand which OA phenotypes are not at risk of progressive cartilage loss from steroid injections.”

Annunziato (Ned) Amendola, MD, professor and sports medicine orthopedic surgeon at Duke Health in Durham, N.C., who was also not involved in the studies, said he would like to know how injection effectiveness and activity level are related.

“If the injections were effective at relieving pain, and the patients were more active, that may have predisposed to more joint wear,” he said. “It’s like tires that last longer if you don’t abuse them.”
 

Shared decision-making and further research recommended

Amanda E. Nelson, MD, associate professor of medicine in the division of rheumatology, allergy, and immunology at the University of North Carolina at Chapel Hill, said: “The lack of randomization introduces potential biases around why certain therapies (CS injection, HA injection, or neither) were selected over others (such as disease severity, preference, comorbid conditions, other contraindications, etc), thus making interpretation of the findings challenging.

“The causal relationship remains in question, and questions around the efficacy of intra-articular HA in particular, and the ideal settings for intra-articular therapy in general, persist,” noted Dr. Nelson, who was also not involved in the studies. “Thus, shared decision-making between patients and their providers is essential when considering these options.”

C. Kent Kwoh, MD, professor of medicine and medical imaging at the University of Arizona and director of the University of Arizona Arthritis Center, both in Tucson, said in an interview that these types of studies are important because CS injections are common treatments for knee OA, they are recommended in treatment guidelines, and other good options are lacking.

But he pointed out that the results of these two studies need to be interpreted with caution and should not be used to decide the course of treatment.

“These data are hypothesis generating. They suggest association, but they do not show causation,” said Dr. Kwoh, who was also not involved in the studies. “Both studies are secondary analyses of data collected from the OAI, which was not specifically designed to answer the questions these studies are posing.

“The OAI was not a treatment study, and participants were seen only once a year or so. They may have had joint injections anytime from only days to around 1 year before their visit, and their levels of activity or pain just prior to or just after their joint injections were not reported,” Dr. Kwoh explained.

The reasons why patients did or did not receive a specific joint injection – including their socioeconomic status, race, access to insurance, and other confounding factors – were not assessed and may have affected the results, he added.

The fact that both studies used the same data and came to the same conclusions gives the conclusions some strength, he said, but “the gold standard to understanding causation would be a randomized, controlled trial.”

Mr. Darbandi’s research received grant support from Boeing, His c-authors, as well as all experts not involved in the studies, reported no relevant financial relationshiips. Dr. Bharadwaj did not provide conflict-of-interest and funding details. Dr. Kwoh reported membership on panels that have developed guidelines for the management of knee OA.

A version of this article first appeared on Medscape.com.

Corticosteroid (CS) injections may worsen progression of knee osteoarthritis as seen on radiography and whole-knee MRI. Injecting hyaluronic acid (HA) instead, or managing the condition without injections, may better preserve knee structure and cartilage, according to results of two related studies presented at the annual meeting of the Radiological Society of North America.

The findings come nonrandomized, observational cohort studies, leading knee OA experts to call for further study in randomized trial settings. In the meantime, shared decision-making between patients and clinicians is advised on the use of these injections.

For knee OA, most patients seek a noninvasive treatment for symptomatic relief. “At least 10% of these patients undergo local treatment with injectable corticosteroids or hyaluronic acid,” the lead author of one of the studies, Upasana Upadhyay Bharadwaj, MD, research fellow in musculoskeletal radiology at the University of California, San Francisco, said in a video press release.

Researchers in both studies used data and images from the Osteoarthritis Initiative (OAI), a multicenter, longitudinal, observational study of 4,796 U.S. patients aged 45-79 years with knee OA. Participants were enrolled from February 2004 to May 2006.

The OAI maintains a natural history database of information regarding participants’ clinical evaluation data, x-rays, MRI scans, and a biospecimen repository. Data are available to researchers worldwide.
 

Two studies draw similar conclusions

In one study, Dr. Bharadwaj and colleagues found that HA injections appeared to show decreased knee OA progression in bone marrow lesions.

They investigated 8 patients who received one CS injection, 12 who received one HA injection, and 40 control persons who received neither treatment. Participants were propensity-score matched by age, sex, body mass index (BMI), Kellgren-Lawrence (KL) grade, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Physical Activity Scale for the Elderly (PASE).

The researchers semiquantitatively graded three Tesla MRI scans that had been obtained at baseline, 2 years before the injection, and 2 years after the injection, using whole-organ MRI score (WORMS) for the meniscus, bone marrow lesions, cartilage, joint effusion, and ligaments.

They quantified OA progression using the difference in WORMS between baseline and 2-year follow-up, and they used linear regression models, adjusted for age, sex, BMI, KL grade, WOMAC, and PASE, to identify the link between type of injection and progression of WORMS.

At 2 years, the authors found a significant association between CS injection and postinjection progression of WORMS over 2 years for the knee overall, the lateral meniscus, lateral cartilage, and medial cartilage. There was no significant link between HA injection and postinjection progression of WORMS or between either injection type and progression of pain, as quantified by WOMAC. There was also no significant difference in progression of WORMS over the 2 years prior to injection for CS and HA injections.

“Corticosteroid injections must be administered with caution with respect to long-term effects on osteoarthritis,” Dr. Bharadwaj advised. “Hyaluronic acid injections, on the other hand, may slow down progression of knee osteoarthritis and alleviate long-term effects while offering similar symptomatic relief to corticosteroid injections. Overall, they are perhaps a safer alternative when looking at medium- and long-term disease course of knee osteoarthritis.”

In the second study, lead author Azad Darbandi, MS, a fourth-year medical student at Chicago Medical School, North Chicago, and colleagues found that patients who received CS injections experienced significantly more medial joint space narrowing.

They identified 210 knees with imaging at baseline and at 48 months that received CS injections, and 59 that received HA injections; 6,827 knees served as controls. The investigators matched 50 patients per group on the basis of confounding factors, which included age, sex, BMI, comorbidities, surgery, and semiquantitative imaging outcomes at baseline. They performed ANCOVA testing using 48-month semiquantitative imaging outcomes as dependent variables and confounding variables as covariates.

The researchers analyzed joint space narrowing, KL grade, and tibia/femur medial/lateral compartment osteophyte formation and sclerosis.

At 4 years, the average KL grade in the CS group was 2.79, it was 2.11 in the HA group,;and it was 2.37 in the control group. Intergroup comparisons showed significant differences in KL grade between CS and HA groups and between CS and control groups. Medial compartment joint space narrowing was 1.56 in the CS group, 1.11 in the HA group, and 1.18 in controls. There was a significant difference between the CS and control groups. Other dependent variables were not significant.

“These preliminary results suggest that corticosteroid injections accelerated the radiographic progression of osteoarthritis, specifically medial joint space narrowing and Kellgren-Lawrence grading, whereas hyaluronic acid injections did not,” Mr. Darbandi said in an interview.

“OA radiographic progression does not always correlate with clinical progression, and further research is needed,” he added.

Proper matching of patients at baseline for confounding factors is a strength of the study, Mr. Darbandi said, while the retrospective study design is a weakness.
 

Experts share their perspectives on the preliminary results

Michael M. Kheir, MD, assistant professor of orthopedic surgery at the University of Michigan Health System, who was not involved in the studies, said he would like to see further related research.

“Perhaps steroid injections are not as benign as they once seemed,” he added. “They should be reserved for patients who already have significant arthritis and are seeking temporary relief prior to surgical reconstruction with a joint replacement, or for patients with recalcitrant pain after having already tried HA injections.”

William A. Jiranek, MD, professor and orthopedic surgeon at Duke Health in Morrisville, N.C., who also was not involved in the studies, was not surprised by the findings.

“It is important to do these studies to learn that steroid injections do not come with zero cost,” he said.

“I am pretty sure that a percentage of these patients had no cartilage loss at all,” he added. “We need to understand which OA phenotypes are not at risk of progressive cartilage loss from steroid injections.”

Annunziato (Ned) Amendola, MD, professor and sports medicine orthopedic surgeon at Duke Health in Durham, N.C., who was also not involved in the studies, said he would like to know how injection effectiveness and activity level are related.

“If the injections were effective at relieving pain, and the patients were more active, that may have predisposed to more joint wear,” he said. “It’s like tires that last longer if you don’t abuse them.”
 

Shared decision-making and further research recommended

Amanda E. Nelson, MD, associate professor of medicine in the division of rheumatology, allergy, and immunology at the University of North Carolina at Chapel Hill, said: “The lack of randomization introduces potential biases around why certain therapies (CS injection, HA injection, or neither) were selected over others (such as disease severity, preference, comorbid conditions, other contraindications, etc), thus making interpretation of the findings challenging.

“The causal relationship remains in question, and questions around the efficacy of intra-articular HA in particular, and the ideal settings for intra-articular therapy in general, persist,” noted Dr. Nelson, who was also not involved in the studies. “Thus, shared decision-making between patients and their providers is essential when considering these options.”

C. Kent Kwoh, MD, professor of medicine and medical imaging at the University of Arizona and director of the University of Arizona Arthritis Center, both in Tucson, said in an interview that these types of studies are important because CS injections are common treatments for knee OA, they are recommended in treatment guidelines, and other good options are lacking.

But he pointed out that the results of these two studies need to be interpreted with caution and should not be used to decide the course of treatment.

“These data are hypothesis generating. They suggest association, but they do not show causation,” said Dr. Kwoh, who was also not involved in the studies. “Both studies are secondary analyses of data collected from the OAI, which was not specifically designed to answer the questions these studies are posing.

“The OAI was not a treatment study, and participants were seen only once a year or so. They may have had joint injections anytime from only days to around 1 year before their visit, and their levels of activity or pain just prior to or just after their joint injections were not reported,” Dr. Kwoh explained.

The reasons why patients did or did not receive a specific joint injection – including their socioeconomic status, race, access to insurance, and other confounding factors – were not assessed and may have affected the results, he added.

The fact that both studies used the same data and came to the same conclusions gives the conclusions some strength, he said, but “the gold standard to understanding causation would be a randomized, controlled trial.”

Mr. Darbandi’s research received grant support from Boeing, His c-authors, as well as all experts not involved in the studies, reported no relevant financial relationshiips. Dr. Bharadwaj did not provide conflict-of-interest and funding details. Dr. Kwoh reported membership on panels that have developed guidelines for the management of knee OA.

A version of this article first appeared on Medscape.com.

Corticosteroid (CS) injections may worsen progression of knee osteoarthritis as seen on radiography and whole-knee MRI. Injecting hyaluronic acid (HA) instead, or managing the condition without injections, may better preserve knee structure and cartilage, according to results of two related studies presented at the annual meeting of the Radiological Society of North America.

The findings come nonrandomized, observational cohort studies, leading knee OA experts to call for further study in randomized trial settings. In the meantime, shared decision-making between patients and clinicians is advised on the use of these injections.

For knee OA, most patients seek a noninvasive treatment for symptomatic relief. “At least 10% of these patients undergo local treatment with injectable corticosteroids or hyaluronic acid,” the lead author of one of the studies, Upasana Upadhyay Bharadwaj, MD, research fellow in musculoskeletal radiology at the University of California, San Francisco, said in a video press release.

Researchers in both studies used data and images from the Osteoarthritis Initiative (OAI), a multicenter, longitudinal, observational study of 4,796 U.S. patients aged 45-79 years with knee OA. Participants were enrolled from February 2004 to May 2006.

The OAI maintains a natural history database of information regarding participants’ clinical evaluation data, x-rays, MRI scans, and a biospecimen repository. Data are available to researchers worldwide.
 

Two studies draw similar conclusions

In one study, Dr. Bharadwaj and colleagues found that HA injections appeared to show decreased knee OA progression in bone marrow lesions.

They investigated 8 patients who received one CS injection, 12 who received one HA injection, and 40 control persons who received neither treatment. Participants were propensity-score matched by age, sex, body mass index (BMI), Kellgren-Lawrence (KL) grade, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Physical Activity Scale for the Elderly (PASE).

The researchers semiquantitatively graded three Tesla MRI scans that had been obtained at baseline, 2 years before the injection, and 2 years after the injection, using whole-organ MRI score (WORMS) for the meniscus, bone marrow lesions, cartilage, joint effusion, and ligaments.

They quantified OA progression using the difference in WORMS between baseline and 2-year follow-up, and they used linear regression models, adjusted for age, sex, BMI, KL grade, WOMAC, and PASE, to identify the link between type of injection and progression of WORMS.

At 2 years, the authors found a significant association between CS injection and postinjection progression of WORMS over 2 years for the knee overall, the lateral meniscus, lateral cartilage, and medial cartilage. There was no significant link between HA injection and postinjection progression of WORMS or between either injection type and progression of pain, as quantified by WOMAC. There was also no significant difference in progression of WORMS over the 2 years prior to injection for CS and HA injections.

“Corticosteroid injections must be administered with caution with respect to long-term effects on osteoarthritis,” Dr. Bharadwaj advised. “Hyaluronic acid injections, on the other hand, may slow down progression of knee osteoarthritis and alleviate long-term effects while offering similar symptomatic relief to corticosteroid injections. Overall, they are perhaps a safer alternative when looking at medium- and long-term disease course of knee osteoarthritis.”

In the second study, lead author Azad Darbandi, MS, a fourth-year medical student at Chicago Medical School, North Chicago, and colleagues found that patients who received CS injections experienced significantly more medial joint space narrowing.

They identified 210 knees with imaging at baseline and at 48 months that received CS injections, and 59 that received HA injections; 6,827 knees served as controls. The investigators matched 50 patients per group on the basis of confounding factors, which included age, sex, BMI, comorbidities, surgery, and semiquantitative imaging outcomes at baseline. They performed ANCOVA testing using 48-month semiquantitative imaging outcomes as dependent variables and confounding variables as covariates.

The researchers analyzed joint space narrowing, KL grade, and tibia/femur medial/lateral compartment osteophyte formation and sclerosis.

At 4 years, the average KL grade in the CS group was 2.79, it was 2.11 in the HA group,;and it was 2.37 in the control group. Intergroup comparisons showed significant differences in KL grade between CS and HA groups and between CS and control groups. Medial compartment joint space narrowing was 1.56 in the CS group, 1.11 in the HA group, and 1.18 in controls. There was a significant difference between the CS and control groups. Other dependent variables were not significant.

“These preliminary results suggest that corticosteroid injections accelerated the radiographic progression of osteoarthritis, specifically medial joint space narrowing and Kellgren-Lawrence grading, whereas hyaluronic acid injections did not,” Mr. Darbandi said in an interview.

“OA radiographic progression does not always correlate with clinical progression, and further research is needed,” he added.

Proper matching of patients at baseline for confounding factors is a strength of the study, Mr. Darbandi said, while the retrospective study design is a weakness.
 

Experts share their perspectives on the preliminary results

Michael M. Kheir, MD, assistant professor of orthopedic surgery at the University of Michigan Health System, who was not involved in the studies, said he would like to see further related research.

“Perhaps steroid injections are not as benign as they once seemed,” he added. “They should be reserved for patients who already have significant arthritis and are seeking temporary relief prior to surgical reconstruction with a joint replacement, or for patients with recalcitrant pain after having already tried HA injections.”

William A. Jiranek, MD, professor and orthopedic surgeon at Duke Health in Morrisville, N.C., who also was not involved in the studies, was not surprised by the findings.

“It is important to do these studies to learn that steroid injections do not come with zero cost,” he said.

“I am pretty sure that a percentage of these patients had no cartilage loss at all,” he added. “We need to understand which OA phenotypes are not at risk of progressive cartilage loss from steroid injections.”

Annunziato (Ned) Amendola, MD, professor and sports medicine orthopedic surgeon at Duke Health in Durham, N.C., who was also not involved in the studies, said he would like to know how injection effectiveness and activity level are related.

“If the injections were effective at relieving pain, and the patients were more active, that may have predisposed to more joint wear,” he said. “It’s like tires that last longer if you don’t abuse them.”
 

Shared decision-making and further research recommended

Amanda E. Nelson, MD, associate professor of medicine in the division of rheumatology, allergy, and immunology at the University of North Carolina at Chapel Hill, said: “The lack of randomization introduces potential biases around why certain therapies (CS injection, HA injection, or neither) were selected over others (such as disease severity, preference, comorbid conditions, other contraindications, etc), thus making interpretation of the findings challenging.

“The causal relationship remains in question, and questions around the efficacy of intra-articular HA in particular, and the ideal settings for intra-articular therapy in general, persist,” noted Dr. Nelson, who was also not involved in the studies. “Thus, shared decision-making between patients and their providers is essential when considering these options.”

C. Kent Kwoh, MD, professor of medicine and medical imaging at the University of Arizona and director of the University of Arizona Arthritis Center, both in Tucson, said in an interview that these types of studies are important because CS injections are common treatments for knee OA, they are recommended in treatment guidelines, and other good options are lacking.

But he pointed out that the results of these two studies need to be interpreted with caution and should not be used to decide the course of treatment.

“These data are hypothesis generating. They suggest association, but they do not show causation,” said Dr. Kwoh, who was also not involved in the studies. “Both studies are secondary analyses of data collected from the OAI, which was not specifically designed to answer the questions these studies are posing.

“The OAI was not a treatment study, and participants were seen only once a year or so. They may have had joint injections anytime from only days to around 1 year before their visit, and their levels of activity or pain just prior to or just after their joint injections were not reported,” Dr. Kwoh explained.

The reasons why patients did or did not receive a specific joint injection – including their socioeconomic status, race, access to insurance, and other confounding factors – were not assessed and may have affected the results, he added.

The fact that both studies used the same data and came to the same conclusions gives the conclusions some strength, he said, but “the gold standard to understanding causation would be a randomized, controlled trial.”

Mr. Darbandi’s research received grant support from Boeing, His c-authors, as well as all experts not involved in the studies, reported no relevant financial relationshiips. Dr. Bharadwaj did not provide conflict-of-interest and funding details. Dr. Kwoh reported membership on panels that have developed guidelines for the management of knee OA.

A version of this article first appeared on Medscape.com.

CHICAGO – One in five women will skip further imaging after an abnormal mammogram if they have to pay out of pocket before their deductible is met, new data indicate.

“The ACA [Affordable Care Act] removed out-of-pocket costs for screening mammograms under most health plans to encourage women to partake in this important preventative health care measure,” Michael Ngo, MD, a radiology resident at Boston Medical Center and Boston University, said in a statement.

However, the screening mammogram is only the first step. If it’s abnormal, additional tests and a biopsy help determine whether the patient has cancer. The ACA does not mandate coverage for those, Dr. Ngo noted.

Dr. Ngo was lead author of the study presented at the annual meeting of the Radiological Society of North America.

Researchers collected 932 surveys. Asked whether they would skip follow-up imaging if they knew that they would have to pay a deductible, 151 of 714 (21.2%) said that they would skip the imaging; 424 (59.4%) said that they would not skip further imaging; and 139 (19.5%) were undecided. Responses differed by race, education level, household income, and insurance payer.
 

Groups most likely to forgo further tests

The groups with the highest percentage of persons who would skip additional imaging were Hispanic persons (33%); persons whose level of education was high school or less (31.0%); persons with a household income of less than $35,000 (27%); and those covered by Medicaid or who were uninsured (31.5%).

Wendie Berg, MD, PhD, professor of radiology at the University of Pittsburgh, who was not part of the study, said that because insurance companies had to cover initial mammograms fully under the ACA, “they generally increased deductibles. That resulted in more charges to patients when they came in for additional testing.

“It caught a lot of women by surprise,” she told this news organization.

The out-of-pocket charges can escalate with each step – more images, a biopsy, then more if they do have cancer, she said. This puts patients on the hook for hundreds, if not thousands, of dollars in medical bills.

However, Dr. Berg said, “The vast majority of women – 95% – who are called back for additional testing don’t have cancer. It is a problem that a lot of women will experience the cost and don’t have any benefit.”
 

Reducing false-positive recalls

The study highlights several things, she said. One is that “it’s incumbent on all of us to reduce false-positive recalls, which is one of the benefits of 3-D mammogram.”

Physicians who order additional tests must also consider the financial burden for patients, she said.

Some states have tackled the issue, she said. “Seven states do require insurance to cover diagnostic testing.” But those states differ in the extent of the coverage. DenseBreast-info.org, a website she helps with on a volunteer basis, explains the benefits by state.

Further compounding the problem is that not every insurer is subject to state law, she said.

Many states have programs that cover the cost for those who meet income requirements, although, she noted, some women make too much to qualify.

“It would be great to have a federal law that is inclusive,” she said.
 

Education efforts may help

Brian N. Dontchos, MD, with the University of Washington in Seattle, who was not part of the study, views the data another way. He told this news organization, “It is encouraging from the study that the majority of women would pursue additional imaging after an abnormal screening mammogram despite incurring more cost.”

He said that since direct patient education “has been shown to be effective in improving patient participation in screening programs, it is possible that, with more education of patients and providers, that advocacy could influence payers to support downstream imaging and biopsies that result from screening programs.”

Dr. Ngo, Dr. Berg, and Dr. Dontchos report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – One in five women will skip further imaging after an abnormal mammogram if they have to pay out of pocket before their deductible is met, new data indicate.

“The ACA [Affordable Care Act] removed out-of-pocket costs for screening mammograms under most health plans to encourage women to partake in this important preventative health care measure,” Michael Ngo, MD, a radiology resident at Boston Medical Center and Boston University, said in a statement.

However, the screening mammogram is only the first step. If it’s abnormal, additional tests and a biopsy help determine whether the patient has cancer. The ACA does not mandate coverage for those, Dr. Ngo noted.

Dr. Ngo was lead author of the study presented at the annual meeting of the Radiological Society of North America.

Researchers collected 932 surveys. Asked whether they would skip follow-up imaging if they knew that they would have to pay a deductible, 151 of 714 (21.2%) said that they would skip the imaging; 424 (59.4%) said that they would not skip further imaging; and 139 (19.5%) were undecided. Responses differed by race, education level, household income, and insurance payer.
 

Groups most likely to forgo further tests

The groups with the highest percentage of persons who would skip additional imaging were Hispanic persons (33%); persons whose level of education was high school or less (31.0%); persons with a household income of less than $35,000 (27%); and those covered by Medicaid or who were uninsured (31.5%).

Wendie Berg, MD, PhD, professor of radiology at the University of Pittsburgh, who was not part of the study, said that because insurance companies had to cover initial mammograms fully under the ACA, “they generally increased deductibles. That resulted in more charges to patients when they came in for additional testing.

“It caught a lot of women by surprise,” she told this news organization.

The out-of-pocket charges can escalate with each step – more images, a biopsy, then more if they do have cancer, she said. This puts patients on the hook for hundreds, if not thousands, of dollars in medical bills.

However, Dr. Berg said, “The vast majority of women – 95% – who are called back for additional testing don’t have cancer. It is a problem that a lot of women will experience the cost and don’t have any benefit.”
 

Reducing false-positive recalls

The study highlights several things, she said. One is that “it’s incumbent on all of us to reduce false-positive recalls, which is one of the benefits of 3-D mammogram.”

Physicians who order additional tests must also consider the financial burden for patients, she said.

Some states have tackled the issue, she said. “Seven states do require insurance to cover diagnostic testing.” But those states differ in the extent of the coverage. DenseBreast-info.org, a website she helps with on a volunteer basis, explains the benefits by state.

Further compounding the problem is that not every insurer is subject to state law, she said.

Many states have programs that cover the cost for those who meet income requirements, although, she noted, some women make too much to qualify.

“It would be great to have a federal law that is inclusive,” she said.
 

Education efforts may help

Brian N. Dontchos, MD, with the University of Washington in Seattle, who was not part of the study, views the data another way. He told this news organization, “It is encouraging from the study that the majority of women would pursue additional imaging after an abnormal screening mammogram despite incurring more cost.”

He said that since direct patient education “has been shown to be effective in improving patient participation in screening programs, it is possible that, with more education of patients and providers, that advocacy could influence payers to support downstream imaging and biopsies that result from screening programs.”

Dr. Ngo, Dr. Berg, and Dr. Dontchos report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – One in five women will skip further imaging after an abnormal mammogram if they have to pay out of pocket before their deductible is met, new data indicate.

“The ACA [Affordable Care Act] removed out-of-pocket costs for screening mammograms under most health plans to encourage women to partake in this important preventative health care measure,” Michael Ngo, MD, a radiology resident at Boston Medical Center and Boston University, said in a statement.

However, the screening mammogram is only the first step. If it’s abnormal, additional tests and a biopsy help determine whether the patient has cancer. The ACA does not mandate coverage for those, Dr. Ngo noted.

Dr. Ngo was lead author of the study presented at the annual meeting of the Radiological Society of North America.

Researchers collected 932 surveys. Asked whether they would skip follow-up imaging if they knew that they would have to pay a deductible, 151 of 714 (21.2%) said that they would skip the imaging; 424 (59.4%) said that they would not skip further imaging; and 139 (19.5%) were undecided. Responses differed by race, education level, household income, and insurance payer.
 

Groups most likely to forgo further tests

The groups with the highest percentage of persons who would skip additional imaging were Hispanic persons (33%); persons whose level of education was high school or less (31.0%); persons with a household income of less than $35,000 (27%); and those covered by Medicaid or who were uninsured (31.5%).

Wendie Berg, MD, PhD, professor of radiology at the University of Pittsburgh, who was not part of the study, said that because insurance companies had to cover initial mammograms fully under the ACA, “they generally increased deductibles. That resulted in more charges to patients when they came in for additional testing.

“It caught a lot of women by surprise,” she told this news organization.

The out-of-pocket charges can escalate with each step – more images, a biopsy, then more if they do have cancer, she said. This puts patients on the hook for hundreds, if not thousands, of dollars in medical bills.

However, Dr. Berg said, “The vast majority of women – 95% – who are called back for additional testing don’t have cancer. It is a problem that a lot of women will experience the cost and don’t have any benefit.”
 

Reducing false-positive recalls

The study highlights several things, she said. One is that “it’s incumbent on all of us to reduce false-positive recalls, which is one of the benefits of 3-D mammogram.”

Physicians who order additional tests must also consider the financial burden for patients, she said.

Some states have tackled the issue, she said. “Seven states do require insurance to cover diagnostic testing.” But those states differ in the extent of the coverage. DenseBreast-info.org, a website she helps with on a volunteer basis, explains the benefits by state.

Further compounding the problem is that not every insurer is subject to state law, she said.

Many states have programs that cover the cost for those who meet income requirements, although, she noted, some women make too much to qualify.

“It would be great to have a federal law that is inclusive,” she said.
 

Education efforts may help

Brian N. Dontchos, MD, with the University of Washington in Seattle, who was not part of the study, views the data another way. He told this news organization, “It is encouraging from the study that the majority of women would pursue additional imaging after an abnormal screening mammogram despite incurring more cost.”

He said that since direct patient education “has been shown to be effective in improving patient participation in screening programs, it is possible that, with more education of patients and providers, that advocacy could influence payers to support downstream imaging and biopsies that result from screening programs.”

Dr. Ngo, Dr. Berg, and Dr. Dontchos report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – A single chest x-ray could predict a patient’s 10-year risk of dying from a heart attack or stroke, say researchers who presented the results of their deep-learning model at the annual meeting of the Radiological Society of North America.

Current American College of Cardiologists and American Heart Association guidelines recommend estimating 10-year risk of major adverse cardiovascular events (MACE) to determine whether a patient should receive statins to help prevent atherosclerotic cardiovascular disease (ASCVD). Statins are recommended for patients with a 10-year risk of 7.5% or higher, the authors noted.

The current ASCVD risk score is determined with nine factors: age, sex, race, systolic blood pressure, hypertension treatment, smoking, type 2 diabetes, and a lipid panel.
 

Not all data points available in EHR

But not all of those data points may be available through the electronic health record, “which makes novel and easier approaches for population-wide screening desirable,” said lead researcher Jakob Weiss, MD, a radiologist affiliated with the Cardiovascular Imaging Research Center at Massachusetts General Hospital and the AI in medicine program at the Brigham and Women’s Hospital in Boston.

Chest x-ray images, on the other hand, are commonly available. The images carry rich information beyond diagnostic data but have not been used in this type of prediction model because AI models have been lacking, Dr. Weiss said.

The researchers trained a deep-learning model with single chest x-rays only.

They used 147,497 chest x-rays from 40,643 participants in the Prostate, Lung, Colorectal, and Ovarian Cancer (PLCO) Screening Trial, a multicenter, randomized controlled trial designed and sponsored by the National Cancer Institute.

Dr. Weiss acknowledged that the population used to train the model was heavily White and that should be a consideration in validating the model.

They compared their model’s ability to predict 10-year ASCVD risk with the standard ACC/AHA model.

“Based on a single chest radiograph image, deep learning can predict the risk of future cardiovascular events independent of cardiovascular risk factors and with similar performance to the established and guideline-recommended ASCVD risk score,” Dr. Weiss said.
 

Tested against independent group

They tested the model against an independent group of 11,430 outpatients (average age, 60 years; 42.9% male) who underwent a routine outpatient chest x-ray at Mass General Brigham and were potentially eligible to receive statins.

Of those 11,430 patients, 1,096 (9.6%) had a major adverse cardiac event over the median follow-up of 10.3 years.

There was a significant association of CXR-CVD risk and MACE among patients eligible to receive statins, the researchers found (hazard ratio, 2.03; 95% confidence interval, 1.81-2.30; P < .001), which remained significant after adjusting for cardiovascular risk factors (adjusted HR, 1.63; 95% CI, 1.43-1.86; P < .001).

Some of the variables were missing in the standard model, but in a subgroup of 2,401 patients, all the variables were available.

They calculated ASCVD risk in that subgroup using the standard model and the CXR model and found that the performance was similar (c-statistic, 0.64 vs. 0.65; P = .48) to the ASCVD risk score (aHR, 1.58; 95% CI, 1.20-2.09; P = .001).

Ritu R. Gill MD, MPH, associate professor of radiology at Harvard Medical School in Boston, who was not part of the study, said in an interview that “the predictive algorithm is promising and potentially translatable and could enhance the annual medical checkup in a select population.

“The algorithm was developed using the PLCO cohort with radiographs, which are likely subjects in the lung cancer screening arm,” she said. “This cohort would be at high risk of cardiovascular diseases, as smoking is a known risk factor for atherosclerotic disease, and therefore the results are expected.

“The algorithm needs to be validated in an independent database with inclusion of subjects with younger age groups and adjusted for gender and racial diversity,” Gill said.

David Cho, MD, a cardiologist at the University of California, Los Angeles, who also was not part of the study, said in an interview that “this work is a great example of AI being able to detect clinically relevant outcomes with a widely used and low-cost screening test.

“The volume of data needed to train these models is already out there,” Dr. Cho said. “It just needs to be mined.”

He noted that this tool, if validated in randomized trials, could help determine risk among patients living in places where access to specialized cardiac care is limited.

Dr. Weiss and Dr. Cho disclosed no relevant financial relationships. Dr. Gill has received research support from Cannon Inc and consultant fees from Imbio and WorldCare.

A version of this article first appeared on Medscape.com.

CHICAGO – A single chest x-ray could predict a patient’s 10-year risk of dying from a heart attack or stroke, say researchers who presented the results of their deep-learning model at the annual meeting of the Radiological Society of North America.

Current American College of Cardiologists and American Heart Association guidelines recommend estimating 10-year risk of major adverse cardiovascular events (MACE) to determine whether a patient should receive statins to help prevent atherosclerotic cardiovascular disease (ASCVD). Statins are recommended for patients with a 10-year risk of 7.5% or higher, the authors noted.

The current ASCVD risk score is determined with nine factors: age, sex, race, systolic blood pressure, hypertension treatment, smoking, type 2 diabetes, and a lipid panel.
 

Not all data points available in EHR

But not all of those data points may be available through the electronic health record, “which makes novel and easier approaches for population-wide screening desirable,” said lead researcher Jakob Weiss, MD, a radiologist affiliated with the Cardiovascular Imaging Research Center at Massachusetts General Hospital and the AI in medicine program at the Brigham and Women’s Hospital in Boston.

Chest x-ray images, on the other hand, are commonly available. The images carry rich information beyond diagnostic data but have not been used in this type of prediction model because AI models have been lacking, Dr. Weiss said.

The researchers trained a deep-learning model with single chest x-rays only.

They used 147,497 chest x-rays from 40,643 participants in the Prostate, Lung, Colorectal, and Ovarian Cancer (PLCO) Screening Trial, a multicenter, randomized controlled trial designed and sponsored by the National Cancer Institute.

Dr. Weiss acknowledged that the population used to train the model was heavily White and that should be a consideration in validating the model.

They compared their model’s ability to predict 10-year ASCVD risk with the standard ACC/AHA model.

“Based on a single chest radiograph image, deep learning can predict the risk of future cardiovascular events independent of cardiovascular risk factors and with similar performance to the established and guideline-recommended ASCVD risk score,” Dr. Weiss said.
 

Tested against independent group

They tested the model against an independent group of 11,430 outpatients (average age, 60 years; 42.9% male) who underwent a routine outpatient chest x-ray at Mass General Brigham and were potentially eligible to receive statins.

Of those 11,430 patients, 1,096 (9.6%) had a major adverse cardiac event over the median follow-up of 10.3 years.

There was a significant association of CXR-CVD risk and MACE among patients eligible to receive statins, the researchers found (hazard ratio, 2.03; 95% confidence interval, 1.81-2.30; P < .001), which remained significant after adjusting for cardiovascular risk factors (adjusted HR, 1.63; 95% CI, 1.43-1.86; P < .001).

Some of the variables were missing in the standard model, but in a subgroup of 2,401 patients, all the variables were available.

They calculated ASCVD risk in that subgroup using the standard model and the CXR model and found that the performance was similar (c-statistic, 0.64 vs. 0.65; P = .48) to the ASCVD risk score (aHR, 1.58; 95% CI, 1.20-2.09; P = .001).

Ritu R. Gill MD, MPH, associate professor of radiology at Harvard Medical School in Boston, who was not part of the study, said in an interview that “the predictive algorithm is promising and potentially translatable and could enhance the annual medical checkup in a select population.

“The algorithm was developed using the PLCO cohort with radiographs, which are likely subjects in the lung cancer screening arm,” she said. “This cohort would be at high risk of cardiovascular diseases, as smoking is a known risk factor for atherosclerotic disease, and therefore the results are expected.

“The algorithm needs to be validated in an independent database with inclusion of subjects with younger age groups and adjusted for gender and racial diversity,” Gill said.

David Cho, MD, a cardiologist at the University of California, Los Angeles, who also was not part of the study, said in an interview that “this work is a great example of AI being able to detect clinically relevant outcomes with a widely used and low-cost screening test.

“The volume of data needed to train these models is already out there,” Dr. Cho said. “It just needs to be mined.”

He noted that this tool, if validated in randomized trials, could help determine risk among patients living in places where access to specialized cardiac care is limited.

Dr. Weiss and Dr. Cho disclosed no relevant financial relationships. Dr. Gill has received research support from Cannon Inc and consultant fees from Imbio and WorldCare.

A version of this article first appeared on Medscape.com.

CHICAGO – A single chest x-ray could predict a patient’s 10-year risk of dying from a heart attack or stroke, say researchers who presented the results of their deep-learning model at the annual meeting of the Radiological Society of North America.

Current American College of Cardiologists and American Heart Association guidelines recommend estimating 10-year risk of major adverse cardiovascular events (MACE) to determine whether a patient should receive statins to help prevent atherosclerotic cardiovascular disease (ASCVD). Statins are recommended for patients with a 10-year risk of 7.5% or higher, the authors noted.

The current ASCVD risk score is determined with nine factors: age, sex, race, systolic blood pressure, hypertension treatment, smoking, type 2 diabetes, and a lipid panel.
 

Not all data points available in EHR

But not all of those data points may be available through the electronic health record, “which makes novel and easier approaches for population-wide screening desirable,” said lead researcher Jakob Weiss, MD, a radiologist affiliated with the Cardiovascular Imaging Research Center at Massachusetts General Hospital and the AI in medicine program at the Brigham and Women’s Hospital in Boston.

Chest x-ray images, on the other hand, are commonly available. The images carry rich information beyond diagnostic data but have not been used in this type of prediction model because AI models have been lacking, Dr. Weiss said.

The researchers trained a deep-learning model with single chest x-rays only.

They used 147,497 chest x-rays from 40,643 participants in the Prostate, Lung, Colorectal, and Ovarian Cancer (PLCO) Screening Trial, a multicenter, randomized controlled trial designed and sponsored by the National Cancer Institute.

Dr. Weiss acknowledged that the population used to train the model was heavily White and that should be a consideration in validating the model.

They compared their model’s ability to predict 10-year ASCVD risk with the standard ACC/AHA model.

“Based on a single chest radiograph image, deep learning can predict the risk of future cardiovascular events independent of cardiovascular risk factors and with similar performance to the established and guideline-recommended ASCVD risk score,” Dr. Weiss said.
 

Tested against independent group

They tested the model against an independent group of 11,430 outpatients (average age, 60 years; 42.9% male) who underwent a routine outpatient chest x-ray at Mass General Brigham and were potentially eligible to receive statins.

Of those 11,430 patients, 1,096 (9.6%) had a major adverse cardiac event over the median follow-up of 10.3 years.

There was a significant association of CXR-CVD risk and MACE among patients eligible to receive statins, the researchers found (hazard ratio, 2.03; 95% confidence interval, 1.81-2.30; P < .001), which remained significant after adjusting for cardiovascular risk factors (adjusted HR, 1.63; 95% CI, 1.43-1.86; P < .001).

Some of the variables were missing in the standard model, but in a subgroup of 2,401 patients, all the variables were available.

They calculated ASCVD risk in that subgroup using the standard model and the CXR model and found that the performance was similar (c-statistic, 0.64 vs. 0.65; P = .48) to the ASCVD risk score (aHR, 1.58; 95% CI, 1.20-2.09; P = .001).

Ritu R. Gill MD, MPH, associate professor of radiology at Harvard Medical School in Boston, who was not part of the study, said in an interview that “the predictive algorithm is promising and potentially translatable and could enhance the annual medical checkup in a select population.

“The algorithm was developed using the PLCO cohort with radiographs, which are likely subjects in the lung cancer screening arm,” she said. “This cohort would be at high risk of cardiovascular diseases, as smoking is a known risk factor for atherosclerotic disease, and therefore the results are expected.

“The algorithm needs to be validated in an independent database with inclusion of subjects with younger age groups and adjusted for gender and racial diversity,” Gill said.

David Cho, MD, a cardiologist at the University of California, Los Angeles, who also was not part of the study, said in an interview that “this work is a great example of AI being able to detect clinically relevant outcomes with a widely used and low-cost screening test.

“The volume of data needed to train these models is already out there,” Dr. Cho said. “It just needs to be mined.”

He noted that this tool, if validated in randomized trials, could help determine risk among patients living in places where access to specialized cardiac care is limited.

Dr. Weiss and Dr. Cho disclosed no relevant financial relationships. Dr. Gill has received research support from Cannon Inc and consultant fees from Imbio and WorldCare.

A version of this article first appeared on Medscape.com.

CHICAGO – Discovering lung cancer early with annual low-dose computed tomography greatly improves long-term survival rates to 80%, findings from a 20-year international study indicate.

Claudia Henschke, MD, PhD, professor of radiology and director of the Early Lung and Cardiac Action Program at the Icahn School of Medicine at Mount Sinai, New York, presented research results at the annual meeting of the Radiological Society of North America.

The researchers studied lung-cancer–specific survival (LCS) of 87,416 participants enrolled in an international, prospective study named the International Early Lung Cancer Action Program.

Lung cancer is the leading cause of cancer death. The American Lung Association states the average 5-year survival rate is 18.6%. Only 16% of the cancers are caught early and more than half of people with lung cancer die within a year of diagnosis.
 

Participants’ 20-year survival rate 80%

Results of this large international study showed the overall 20-year survival rate for the 1,285 screening participants diagnosed with early-stage cancer was 80% (95% confidence interval, 77%-83%). Among the 1,285 diagnosed, 83% had stage 1 cancer, Dr. Henschke said.

Lung cancer survival (LCS) was 100% for the 139 participants with nonsolid nodule consistency and for the 155 participants with part-solid consistency. LCS was 73% (95% CI, 69%-77%) for the 991 with solid consistency, and for clinical stage IA participants LCS was 86% (95% CI, 83%-89%), regardless of consistency.

For participants with pathologic stage IA lung cancer 10 mm or less in average diameter, the 20-year survival rate with identification and resection was 92% (95% CI, 87%-96%).

No lung cancer deaths were identified in the part-solid and nonsolid cancers, the researchers report.

These results show the 10-year findings from 2006 published in the New England Journal of Medicine, which also showed 80% survival rates with low-dose CT, have persisted, she said.

At the time of the 2006 paper, 95% of Americans diagnosed with lung cancer died from it, Dr. Henschke said.

Dr. Henschke notes that by the time symptoms appear, lung cancer is often advanced, so the best tool for detecting early-stage lung cancer is enrolling in an annual screening program.

When cancer is small enough and can be surgically removed, patients can be effectively cured long-term, she said.

“In the future, perhaps blood markers will allow us to detect it in the first half of the life cycle of lung cancer instead of CT at the beginning of the second half of the life cycle,” Dr. Henschke said.

“The study raises the power of prospective data collection in the context of clinical care as recommended by the Institute of Medicine long ago,” she said.
 

Findings “very promising”

Ernest Hawk, MD, MPH, head of the division of cancer prevention and population sciences at the University of Texas MD Anderson Cancer, Houston, told this news organization the findings look “very promising.” Dr. Hawk was not involved in the study.

“This was one of the earliest studies to evaluate low-dose CT scanning. Their report that the initial benefits seem to be holding up over a longer period of observation is great,” he said.

“This bolsters the data that lung cancer screening is beneficial over a longer period of observation,” he said, noting that most of the randomized controlled trials have been shorter.

Lung cancer screening is now recommended for high-risk individuals – those with at least a 20-pack-year history of tobacco use who are between 50 and 80 years old.

So far, screening is still limited to people at high risk, Dr. Hawk said, though there’s discussion about whether benefit would extend to people exposed to asbestos, for instance, or secondhand smoke.

“The biggest challenge right now is getting the screening to those who actually meet the criteria,” Dr. Hawk said.

Medscape reported earlier this month that less than 6% of high-risk smokers have the recommended annual lung cancer screening, according to a new report from the American Lung Association.

Dr. Henschke is on the Advisory Board for LungLifeAI and is on the board for the Early Diagnosis and Treatment Research Foundation. Dr. Hawk reports no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Discovering lung cancer early with annual low-dose computed tomography greatly improves long-term survival rates to 80%, findings from a 20-year international study indicate.

Claudia Henschke, MD, PhD, professor of radiology and director of the Early Lung and Cardiac Action Program at the Icahn School of Medicine at Mount Sinai, New York, presented research results at the annual meeting of the Radiological Society of North America.

The researchers studied lung-cancer–specific survival (LCS) of 87,416 participants enrolled in an international, prospective study named the International Early Lung Cancer Action Program.

Lung cancer is the leading cause of cancer death. The American Lung Association states the average 5-year survival rate is 18.6%. Only 16% of the cancers are caught early and more than half of people with lung cancer die within a year of diagnosis.
 

Participants’ 20-year survival rate 80%

Results of this large international study showed the overall 20-year survival rate for the 1,285 screening participants diagnosed with early-stage cancer was 80% (95% confidence interval, 77%-83%). Among the 1,285 diagnosed, 83% had stage 1 cancer, Dr. Henschke said.

Lung cancer survival (LCS) was 100% for the 139 participants with nonsolid nodule consistency and for the 155 participants with part-solid consistency. LCS was 73% (95% CI, 69%-77%) for the 991 with solid consistency, and for clinical stage IA participants LCS was 86% (95% CI, 83%-89%), regardless of consistency.

For participants with pathologic stage IA lung cancer 10 mm or less in average diameter, the 20-year survival rate with identification and resection was 92% (95% CI, 87%-96%).

No lung cancer deaths were identified in the part-solid and nonsolid cancers, the researchers report.

These results show the 10-year findings from 2006 published in the New England Journal of Medicine, which also showed 80% survival rates with low-dose CT, have persisted, she said.

At the time of the 2006 paper, 95% of Americans diagnosed with lung cancer died from it, Dr. Henschke said.

Dr. Henschke notes that by the time symptoms appear, lung cancer is often advanced, so the best tool for detecting early-stage lung cancer is enrolling in an annual screening program.

When cancer is small enough and can be surgically removed, patients can be effectively cured long-term, she said.

“In the future, perhaps blood markers will allow us to detect it in the first half of the life cycle of lung cancer instead of CT at the beginning of the second half of the life cycle,” Dr. Henschke said.

“The study raises the power of prospective data collection in the context of clinical care as recommended by the Institute of Medicine long ago,” she said.
 

Findings “very promising”

Ernest Hawk, MD, MPH, head of the division of cancer prevention and population sciences at the University of Texas MD Anderson Cancer, Houston, told this news organization the findings look “very promising.” Dr. Hawk was not involved in the study.

“This was one of the earliest studies to evaluate low-dose CT scanning. Their report that the initial benefits seem to be holding up over a longer period of observation is great,” he said.

“This bolsters the data that lung cancer screening is beneficial over a longer period of observation,” he said, noting that most of the randomized controlled trials have been shorter.

Lung cancer screening is now recommended for high-risk individuals – those with at least a 20-pack-year history of tobacco use who are between 50 and 80 years old.

So far, screening is still limited to people at high risk, Dr. Hawk said, though there’s discussion about whether benefit would extend to people exposed to asbestos, for instance, or secondhand smoke.

“The biggest challenge right now is getting the screening to those who actually meet the criteria,” Dr. Hawk said.

Medscape reported earlier this month that less than 6% of high-risk smokers have the recommended annual lung cancer screening, according to a new report from the American Lung Association.

Dr. Henschke is on the Advisory Board for LungLifeAI and is on the board for the Early Diagnosis and Treatment Research Foundation. Dr. Hawk reports no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Discovering lung cancer early with annual low-dose computed tomography greatly improves long-term survival rates to 80%, findings from a 20-year international study indicate.

Claudia Henschke, MD, PhD, professor of radiology and director of the Early Lung and Cardiac Action Program at the Icahn School of Medicine at Mount Sinai, New York, presented research results at the annual meeting of the Radiological Society of North America.

The researchers studied lung-cancer–specific survival (LCS) of 87,416 participants enrolled in an international, prospective study named the International Early Lung Cancer Action Program.

Lung cancer is the leading cause of cancer death. The American Lung Association states the average 5-year survival rate is 18.6%. Only 16% of the cancers are caught early and more than half of people with lung cancer die within a year of diagnosis.
 

Participants’ 20-year survival rate 80%

Results of this large international study showed the overall 20-year survival rate for the 1,285 screening participants diagnosed with early-stage cancer was 80% (95% confidence interval, 77%-83%). Among the 1,285 diagnosed, 83% had stage 1 cancer, Dr. Henschke said.

Lung cancer survival (LCS) was 100% for the 139 participants with nonsolid nodule consistency and for the 155 participants with part-solid consistency. LCS was 73% (95% CI, 69%-77%) for the 991 with solid consistency, and for clinical stage IA participants LCS was 86% (95% CI, 83%-89%), regardless of consistency.

For participants with pathologic stage IA lung cancer 10 mm or less in average diameter, the 20-year survival rate with identification and resection was 92% (95% CI, 87%-96%).

No lung cancer deaths were identified in the part-solid and nonsolid cancers, the researchers report.

These results show the 10-year findings from 2006 published in the New England Journal of Medicine, which also showed 80% survival rates with low-dose CT, have persisted, she said.

At the time of the 2006 paper, 95% of Americans diagnosed with lung cancer died from it, Dr. Henschke said.

Dr. Henschke notes that by the time symptoms appear, lung cancer is often advanced, so the best tool for detecting early-stage lung cancer is enrolling in an annual screening program.

When cancer is small enough and can be surgically removed, patients can be effectively cured long-term, she said.

“In the future, perhaps blood markers will allow us to detect it in the first half of the life cycle of lung cancer instead of CT at the beginning of the second half of the life cycle,” Dr. Henschke said.

“The study raises the power of prospective data collection in the context of clinical care as recommended by the Institute of Medicine long ago,” she said.
 

Findings “very promising”

Ernest Hawk, MD, MPH, head of the division of cancer prevention and population sciences at the University of Texas MD Anderson Cancer, Houston, told this news organization the findings look “very promising.” Dr. Hawk was not involved in the study.

“This was one of the earliest studies to evaluate low-dose CT scanning. Their report that the initial benefits seem to be holding up over a longer period of observation is great,” he said.

“This bolsters the data that lung cancer screening is beneficial over a longer period of observation,” he said, noting that most of the randomized controlled trials have been shorter.

Lung cancer screening is now recommended for high-risk individuals – those with at least a 20-pack-year history of tobacco use who are between 50 and 80 years old.

So far, screening is still limited to people at high risk, Dr. Hawk said, though there’s discussion about whether benefit would extend to people exposed to asbestos, for instance, or secondhand smoke.

“The biggest challenge right now is getting the screening to those who actually meet the criteria,” Dr. Hawk said.

Medscape reported earlier this month that less than 6% of high-risk smokers have the recommended annual lung cancer screening, according to a new report from the American Lung Association.

Dr. Henschke is on the Advisory Board for LungLifeAI and is on the board for the Early Diagnosis and Treatment Research Foundation. Dr. Hawk reports no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Higher weight and body mass index (BMI) in preadolescents are linked with poor brain health, new research suggests.

Poor brain health has been linked with obesity in adults, but little has been known about the link in children.

Lead author Simone Kaltenhauser, a postgraduate research fellow in radiology and biomedical imaging at the Yale School of Medicine, New Haven, Conn., presented her findings at the annual meeting of the Radiological Society of North America.

To represent the national sociodemographic makeup, the researchers used baseline information from the Adolescent Brain Cognitive Development (ABCD) study, which included 11,878 children aged 9 and 10 years from 21 centers across the United States.

This study included 5,169 children (51.9% girls). Children who had had traumatic brain injury, eating disorders, neurodevelopmental problems, and psychiatric diseases were excluded from the final analysis.

The researchers analyzed information from structural MRI and resting-state functional MRI, which allowed them to measure brain activity by detecting changes in blood flow.

“We analyzed the average fractional anisotropy (FA), mean (MD), axial (AD) and radial diffusivity (RD), and neurite density (ND) of 35 white matter (WM) tracts; cortical thickness and surface of 68 regions; and functional connectivity of 91 predefined network correlations,” the authors explained.

They adjusted for age, sex, race/ethnicity, handedness, and socioeconomic status. They used linear models to determine associations between weight and BMI z-scores and the imaging metrics.
 

Loss of white matter integrity

Among children with obesity, there was pervasive loss of white matter integrity and neurite density, cortical gray matter thinning, and decreased connectivity within and between networks that have been associated with impulse control and reward-based decision-making.

“These changes persisted in a similar pattern also 2 years later,” she said.

A member of the audience asked whether a reverse relationship might be at work – that poor brain health might drive obesity rather than the other way around.

Ms. Kaltenhauser agreed that other factors could be driving the link and acknowledged as a limitation that they did not have access to genetic information on the children.

Information on the effects of overweight and obesity is critical, especially in the United States, where an estimated 1 in 5 children are obese.

Ms. Kaltenhauser said she hopes her study raises awareness of potential brain health consequences as well as the physical consequences of childhood obesity.

Senior author Sam Payabvash, MD, a neuroradiologist and assistant professor of radiology and biomedical imaging at the Yale School of Medicine, said in a press release that the study may help explain the findings from previous studies that show an association between higher BMI in children and poor cognitive functioning and academic performance.

“The longitudinal ABCD study gives us the opportunity to observe any changes that occur in children with higher weight and BMI z-scores,” Dr. Payabvash said. “We’ll need to watch over the next 6-10 years.”
 

Avenues for future research

Amit B. Desai, MD, a neuroradiologist with Mayo Clinic in Jacksonville, Fla., who was not part of the study, said that while the research demonstrates an association between brain structure and BMI and obesity, “there may be other lurking variables.”

“What’s happening at an earlier stage in life could be causing both,” he said.

He noted that he would like to see future studies involving children at even earlier ages, along with investigations of the role of genetics or socioeconomic factors.

Including older children would be interesting as well, he said.

“Myelination doesn’t complete until you’re in your late teens or early 20s, so there are structural changes happening in the brain much later on into adolescence and early adulthood,” Dr. Desai said.

It would be premature, he said, to conclude from these findings that if children have obesity, there must be something wrong with their brain.

He would like to see whether there are changes in this link if a child is obese early on and later has normal weight or if a child has normal weight early and then becomes obese.

“It’s definitely an eye-opening study, but [it] needs additional work to expand upon it,” he said.

Ms. Kaltenhauser and Dr. Desai report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Higher weight and body mass index (BMI) in preadolescents are linked with poor brain health, new research suggests.

Poor brain health has been linked with obesity in adults, but little has been known about the link in children.

Lead author Simone Kaltenhauser, a postgraduate research fellow in radiology and biomedical imaging at the Yale School of Medicine, New Haven, Conn., presented her findings at the annual meeting of the Radiological Society of North America.

To represent the national sociodemographic makeup, the researchers used baseline information from the Adolescent Brain Cognitive Development (ABCD) study, which included 11,878 children aged 9 and 10 years from 21 centers across the United States.

This study included 5,169 children (51.9% girls). Children who had had traumatic brain injury, eating disorders, neurodevelopmental problems, and psychiatric diseases were excluded from the final analysis.

The researchers analyzed information from structural MRI and resting-state functional MRI, which allowed them to measure brain activity by detecting changes in blood flow.

“We analyzed the average fractional anisotropy (FA), mean (MD), axial (AD) and radial diffusivity (RD), and neurite density (ND) of 35 white matter (WM) tracts; cortical thickness and surface of 68 regions; and functional connectivity of 91 predefined network correlations,” the authors explained.

They adjusted for age, sex, race/ethnicity, handedness, and socioeconomic status. They used linear models to determine associations between weight and BMI z-scores and the imaging metrics.
 

Loss of white matter integrity

Among children with obesity, there was pervasive loss of white matter integrity and neurite density, cortical gray matter thinning, and decreased connectivity within and between networks that have been associated with impulse control and reward-based decision-making.

“These changes persisted in a similar pattern also 2 years later,” she said.

A member of the audience asked whether a reverse relationship might be at work – that poor brain health might drive obesity rather than the other way around.

Ms. Kaltenhauser agreed that other factors could be driving the link and acknowledged as a limitation that they did not have access to genetic information on the children.

Information on the effects of overweight and obesity is critical, especially in the United States, where an estimated 1 in 5 children are obese.

Ms. Kaltenhauser said she hopes her study raises awareness of potential brain health consequences as well as the physical consequences of childhood obesity.

Senior author Sam Payabvash, MD, a neuroradiologist and assistant professor of radiology and biomedical imaging at the Yale School of Medicine, said in a press release that the study may help explain the findings from previous studies that show an association between higher BMI in children and poor cognitive functioning and academic performance.

“The longitudinal ABCD study gives us the opportunity to observe any changes that occur in children with higher weight and BMI z-scores,” Dr. Payabvash said. “We’ll need to watch over the next 6-10 years.”
 

Avenues for future research

Amit B. Desai, MD, a neuroradiologist with Mayo Clinic in Jacksonville, Fla., who was not part of the study, said that while the research demonstrates an association between brain structure and BMI and obesity, “there may be other lurking variables.”

“What’s happening at an earlier stage in life could be causing both,” he said.

He noted that he would like to see future studies involving children at even earlier ages, along with investigations of the role of genetics or socioeconomic factors.

Including older children would be interesting as well, he said.

“Myelination doesn’t complete until you’re in your late teens or early 20s, so there are structural changes happening in the brain much later on into adolescence and early adulthood,” Dr. Desai said.

It would be premature, he said, to conclude from these findings that if children have obesity, there must be something wrong with their brain.

He would like to see whether there are changes in this link if a child is obese early on and later has normal weight or if a child has normal weight early and then becomes obese.

“It’s definitely an eye-opening study, but [it] needs additional work to expand upon it,” he said.

Ms. Kaltenhauser and Dr. Desai report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Higher weight and body mass index (BMI) in preadolescents are linked with poor brain health, new research suggests.

Poor brain health has been linked with obesity in adults, but little has been known about the link in children.

Lead author Simone Kaltenhauser, a postgraduate research fellow in radiology and biomedical imaging at the Yale School of Medicine, New Haven, Conn., presented her findings at the annual meeting of the Radiological Society of North America.

To represent the national sociodemographic makeup, the researchers used baseline information from the Adolescent Brain Cognitive Development (ABCD) study, which included 11,878 children aged 9 and 10 years from 21 centers across the United States.

This study included 5,169 children (51.9% girls). Children who had had traumatic brain injury, eating disorders, neurodevelopmental problems, and psychiatric diseases were excluded from the final analysis.

The researchers analyzed information from structural MRI and resting-state functional MRI, which allowed them to measure brain activity by detecting changes in blood flow.

“We analyzed the average fractional anisotropy (FA), mean (MD), axial (AD) and radial diffusivity (RD), and neurite density (ND) of 35 white matter (WM) tracts; cortical thickness and surface of 68 regions; and functional connectivity of 91 predefined network correlations,” the authors explained.

They adjusted for age, sex, race/ethnicity, handedness, and socioeconomic status. They used linear models to determine associations between weight and BMI z-scores and the imaging metrics.
 

Loss of white matter integrity

Among children with obesity, there was pervasive loss of white matter integrity and neurite density, cortical gray matter thinning, and decreased connectivity within and between networks that have been associated with impulse control and reward-based decision-making.

“These changes persisted in a similar pattern also 2 years later,” she said.

A member of the audience asked whether a reverse relationship might be at work – that poor brain health might drive obesity rather than the other way around.

Ms. Kaltenhauser agreed that other factors could be driving the link and acknowledged as a limitation that they did not have access to genetic information on the children.

Information on the effects of overweight and obesity is critical, especially in the United States, where an estimated 1 in 5 children are obese.

Ms. Kaltenhauser said she hopes her study raises awareness of potential brain health consequences as well as the physical consequences of childhood obesity.

Senior author Sam Payabvash, MD, a neuroradiologist and assistant professor of radiology and biomedical imaging at the Yale School of Medicine, said in a press release that the study may help explain the findings from previous studies that show an association between higher BMI in children and poor cognitive functioning and academic performance.

“The longitudinal ABCD study gives us the opportunity to observe any changes that occur in children with higher weight and BMI z-scores,” Dr. Payabvash said. “We’ll need to watch over the next 6-10 years.”
 

Avenues for future research

Amit B. Desai, MD, a neuroradiologist with Mayo Clinic in Jacksonville, Fla., who was not part of the study, said that while the research demonstrates an association between brain structure and BMI and obesity, “there may be other lurking variables.”

“What’s happening at an earlier stage in life could be causing both,” he said.

He noted that he would like to see future studies involving children at even earlier ages, along with investigations of the role of genetics or socioeconomic factors.

Including older children would be interesting as well, he said.

“Myelination doesn’t complete until you’re in your late teens or early 20s, so there are structural changes happening in the brain much later on into adolescence and early adulthood,” Dr. Desai said.

It would be premature, he said, to conclude from these findings that if children have obesity, there must be something wrong with their brain.

He would like to see whether there are changes in this link if a child is obese early on and later has normal weight or if a child has normal weight early and then becomes obese.

“It’s definitely an eye-opening study, but [it] needs additional work to expand upon it,” he said.

Ms. Kaltenhauser and Dr. Desai report no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Taking NSAIDs for knee osteoarthritis may worsen inflammation and pain over time, suggest new data revealed at the annual meeting of the Radiological Society of North America.

Johanna Luitjens, MD, a postdoctoral scholar in the department of radiology and biomedical Imaging at the University of California, San Francisco, told this news organization that NSAIDs are frequently used to treat OA pain because inflammation is one of the main drivers of OA, but whether they actually help outcomes has been unclear. Her study suggests that they don’t help – and may actually worsen – outcomes.

Denise Fulton/MDedge News

In particular, this study looked at the impact of NSAIDs on synovitis – the inflammation of the membrane lining the knee joint – by using MRI-based structural biomarkers.

OA, the most common form of arthritis, affects more than 32 million adults in the United States and more than 500 million people worldwide.
 

No approved therapy to reduce OA progression

Little is known of the long-term effects of NSAIDs on OA progression. Currently, there’s no approved therapy to cure OA or to reduce its advance.

Dr. Luitjens noted, however, that the synovial membrane mediates development and progression of OA and may be a good therapeutic target.

Researchers studied participants from the Osteoarthritis Initiative (OAI) cohort with moderate to severe OA who used NSAIDs regularly for at least 1 year between baseline and 4-year follow-up. All participants had high-quality 3T MRI of the knee at baseline and after 4 years. Images were scored for biomarkers of inflammation, including cartilage thickness and composition.

Dr. Luitjens and associates studied 721 participants who matched the inclusion criteria (129 with and 592 participants without regular NSAID use). The available data did not further specify amounts of NSAIDs used.

At baseline, significantly higher signal intensity in the infrapatellar fat pad (IFP) was seen in patients who used NSAID, compared with controls (adjusted difference in score, 0.26; 95% confidence interval, –0.5 to –0.129; P = .039).

In addition, at the end of the study period, there was a significantly greater increase in signal intensity of IFP (adjusted difference in score, 0.46; 95% CI, 0.2-0.72; P < .001) and higher increase in effusion synovitis (adjusted difference in score, 0.27; 95% CI, 0.06-0.47;  P = .01) in NSAID users, compared with controls.

IFP size and synovial proliferation score did not different significantly between groups at the start of the study and showed no significant change over time.

The results showed no long-term benefit of NSAID use. Joint inflammation and cartilage quality were worse at baseline in the participants taking NSAIDs, compared with the control group, and worsened at 4-year follow-up.

Design limits strength

Amanda E. Nelson, MD, associate professor of medicine, division of rheumatology, allergy, and immunology at the University of North Carolina at Chapel Hill, cautioned against assuming causality, pointing out that the OAI is an observational cohort study. (Dr. Nelson was not involved in the OAI or Dr. Luitjens’ analysis.)

“[The OAI is] large and well known, but it wasn’t designed to compare these groups, and this was a small subset,” she said in an interview. Without randomization, it’s hard to judge the results.

“It may be that people on NSAIDs for the duration of the study had more pain and had more disease to begin with, or had more symptoms or had failed other treatments,” she said, adding that the effect sizes were small.

Measures such as the IFP are ranked 0-3, so “the clinical difference of a 0.26 difference on a 0-3 scale is a bit uncertain,” she said.

Dr. Luitjens said that the researchers tried to adjust for potential confounders but agreed that randomized controlled trials are needed to better advise physicians and patients on the benefits or harms of using NSAIDs for OA.

Weighing the risks in older adults

Una Makris, MD, associate professor of internal medicine in the division of rheumatic diseases at the University of Texas Southwestern Medical Center, Dallas, noted that NSAIDs are “not always the safest option.”

“We are still in desperate need of disease-modifying drugs in OA with rigorous randomized trials to show efficacy for outcomes that are most meaningful to patients,” Dr. Makris, who was not involved in the study, told this news organization.

“OA is most common in older adults, those often with multiple comorbidities, so we must always weigh the risks – including known adverse effects which can be amplified in older adults – and benefits with the goal of improved function and less pain,” Dr. Makris said.

NSAID use also should be considered in the context of body mass index, cardiovascular risk, prior trauma or injury, other medication use, and behavioral factors, including physical activity, she said.

Dr. Luitjens, Dr. Nelson, and Dr. Makris reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Taking NSAIDs for knee osteoarthritis may worsen inflammation and pain over time, suggest new data revealed at the annual meeting of the Radiological Society of North America.

Johanna Luitjens, MD, a postdoctoral scholar in the department of radiology and biomedical Imaging at the University of California, San Francisco, told this news organization that NSAIDs are frequently used to treat OA pain because inflammation is one of the main drivers of OA, but whether they actually help outcomes has been unclear. Her study suggests that they don’t help – and may actually worsen – outcomes.

Denise Fulton/MDedge News

In particular, this study looked at the impact of NSAIDs on synovitis – the inflammation of the membrane lining the knee joint – by using MRI-based structural biomarkers.

OA, the most common form of arthritis, affects more than 32 million adults in the United States and more than 500 million people worldwide.
 

No approved therapy to reduce OA progression

Little is known of the long-term effects of NSAIDs on OA progression. Currently, there’s no approved therapy to cure OA or to reduce its advance.

Dr. Luitjens noted, however, that the synovial membrane mediates development and progression of OA and may be a good therapeutic target.

Researchers studied participants from the Osteoarthritis Initiative (OAI) cohort with moderate to severe OA who used NSAIDs regularly for at least 1 year between baseline and 4-year follow-up. All participants had high-quality 3T MRI of the knee at baseline and after 4 years. Images were scored for biomarkers of inflammation, including cartilage thickness and composition.

Dr. Luitjens and associates studied 721 participants who matched the inclusion criteria (129 with and 592 participants without regular NSAID use). The available data did not further specify amounts of NSAIDs used.

At baseline, significantly higher signal intensity in the infrapatellar fat pad (IFP) was seen in patients who used NSAID, compared with controls (adjusted difference in score, 0.26; 95% confidence interval, –0.5 to –0.129; P = .039).

In addition, at the end of the study period, there was a significantly greater increase in signal intensity of IFP (adjusted difference in score, 0.46; 95% CI, 0.2-0.72; P < .001) and higher increase in effusion synovitis (adjusted difference in score, 0.27; 95% CI, 0.06-0.47;  P = .01) in NSAID users, compared with controls.

IFP size and synovial proliferation score did not different significantly between groups at the start of the study and showed no significant change over time.

The results showed no long-term benefit of NSAID use. Joint inflammation and cartilage quality were worse at baseline in the participants taking NSAIDs, compared with the control group, and worsened at 4-year follow-up.

Design limits strength

Amanda E. Nelson, MD, associate professor of medicine, division of rheumatology, allergy, and immunology at the University of North Carolina at Chapel Hill, cautioned against assuming causality, pointing out that the OAI is an observational cohort study. (Dr. Nelson was not involved in the OAI or Dr. Luitjens’ analysis.)

“[The OAI is] large and well known, but it wasn’t designed to compare these groups, and this was a small subset,” she said in an interview. Without randomization, it’s hard to judge the results.

“It may be that people on NSAIDs for the duration of the study had more pain and had more disease to begin with, or had more symptoms or had failed other treatments,” she said, adding that the effect sizes were small.

Measures such as the IFP are ranked 0-3, so “the clinical difference of a 0.26 difference on a 0-3 scale is a bit uncertain,” she said.

Dr. Luitjens said that the researchers tried to adjust for potential confounders but agreed that randomized controlled trials are needed to better advise physicians and patients on the benefits or harms of using NSAIDs for OA.

Weighing the risks in older adults

Una Makris, MD, associate professor of internal medicine in the division of rheumatic diseases at the University of Texas Southwestern Medical Center, Dallas, noted that NSAIDs are “not always the safest option.”

“We are still in desperate need of disease-modifying drugs in OA with rigorous randomized trials to show efficacy for outcomes that are most meaningful to patients,” Dr. Makris, who was not involved in the study, told this news organization.

“OA is most common in older adults, those often with multiple comorbidities, so we must always weigh the risks – including known adverse effects which can be amplified in older adults – and benefits with the goal of improved function and less pain,” Dr. Makris said.

NSAID use also should be considered in the context of body mass index, cardiovascular risk, prior trauma or injury, other medication use, and behavioral factors, including physical activity, she said.

Dr. Luitjens, Dr. Nelson, and Dr. Makris reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

CHICAGO – Taking NSAIDs for knee osteoarthritis may worsen inflammation and pain over time, suggest new data revealed at the annual meeting of the Radiological Society of North America.

Johanna Luitjens, MD, a postdoctoral scholar in the department of radiology and biomedical Imaging at the University of California, San Francisco, told this news organization that NSAIDs are frequently used to treat OA pain because inflammation is one of the main drivers of OA, but whether they actually help outcomes has been unclear. Her study suggests that they don’t help – and may actually worsen – outcomes.

Denise Fulton/MDedge News

In particular, this study looked at the impact of NSAIDs on synovitis – the inflammation of the membrane lining the knee joint – by using MRI-based structural biomarkers.

OA, the most common form of arthritis, affects more than 32 million adults in the United States and more than 500 million people worldwide.
 

No approved therapy to reduce OA progression

Little is known of the long-term effects of NSAIDs on OA progression. Currently, there’s no approved therapy to cure OA or to reduce its advance.

Dr. Luitjens noted, however, that the synovial membrane mediates development and progression of OA and may be a good therapeutic target.

Researchers studied participants from the Osteoarthritis Initiative (OAI) cohort with moderate to severe OA who used NSAIDs regularly for at least 1 year between baseline and 4-year follow-up. All participants had high-quality 3T MRI of the knee at baseline and after 4 years. Images were scored for biomarkers of inflammation, including cartilage thickness and composition.

Dr. Luitjens and associates studied 721 participants who matched the inclusion criteria (129 with and 592 participants without regular NSAID use). The available data did not further specify amounts of NSAIDs used.

At baseline, significantly higher signal intensity in the infrapatellar fat pad (IFP) was seen in patients who used NSAID, compared with controls (adjusted difference in score, 0.26; 95% confidence interval, –0.5 to –0.129; P = .039).

In addition, at the end of the study period, there was a significantly greater increase in signal intensity of IFP (adjusted difference in score, 0.46; 95% CI, 0.2-0.72; P < .001) and higher increase in effusion synovitis (adjusted difference in score, 0.27; 95% CI, 0.06-0.47;  P = .01) in NSAID users, compared with controls.

IFP size and synovial proliferation score did not different significantly between groups at the start of the study and showed no significant change over time.

The results showed no long-term benefit of NSAID use. Joint inflammation and cartilage quality were worse at baseline in the participants taking NSAIDs, compared with the control group, and worsened at 4-year follow-up.

Design limits strength

Amanda E. Nelson, MD, associate professor of medicine, division of rheumatology, allergy, and immunology at the University of North Carolina at Chapel Hill, cautioned against assuming causality, pointing out that the OAI is an observational cohort study. (Dr. Nelson was not involved in the OAI or Dr. Luitjens’ analysis.)

“[The OAI is] large and well known, but it wasn’t designed to compare these groups, and this was a small subset,” she said in an interview. Without randomization, it’s hard to judge the results.

“It may be that people on NSAIDs for the duration of the study had more pain and had more disease to begin with, or had more symptoms or had failed other treatments,” she said, adding that the effect sizes were small.

Measures such as the IFP are ranked 0-3, so “the clinical difference of a 0.26 difference on a 0-3 scale is a bit uncertain,” she said.

Dr. Luitjens said that the researchers tried to adjust for potential confounders but agreed that randomized controlled trials are needed to better advise physicians and patients on the benefits or harms of using NSAIDs for OA.

Weighing the risks in older adults

Una Makris, MD, associate professor of internal medicine in the division of rheumatic diseases at the University of Texas Southwestern Medical Center, Dallas, noted that NSAIDs are “not always the safest option.”

“We are still in desperate need of disease-modifying drugs in OA with rigorous randomized trials to show efficacy for outcomes that are most meaningful to patients,” Dr. Makris, who was not involved in the study, told this news organization.

“OA is most common in older adults, those often with multiple comorbidities, so we must always weigh the risks – including known adverse effects which can be amplified in older adults – and benefits with the goal of improved function and less pain,” Dr. Makris said.

NSAID use also should be considered in the context of body mass index, cardiovascular risk, prior trauma or injury, other medication use, and behavioral factors, including physical activity, she said.

Dr. Luitjens, Dr. Nelson, and Dr. Makris reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.