9vHPV VACCINE: PREVENTION OF OROPHARYNGEAL CANCER
ROBERT L. BARBIERI, MD (EDITORIAL; NOVEMBER 2020)
HPV vaccine for older ObGyns?
I am 67 years old and recently retired. I breathed in the smoke from laser conizations, LEEPs (loop electrosurgical excision procedures), and cautery of condyloma for 35 years. Am I a good candidate for the HPV vaccine?
Gus Barkett, DO
Muskegon, Michigan
Dr. Barbieri responds
I thank Dr. Barkett for his important question. As you know, the US Food and Drug Administration has approved 9vHPV vaccination for people 27 to 45 years of age. I do not believe there are sufficient data to provide an evidence-based answer for physicians with occupational exposure to HPV who are more than 45 years of age. My recommendation would be to have a consult with an otolaryngologist expert in HPV-induced oral-pharyngeal cancer.
EXAMINING THE EVIDENCE: HOW EFFECTIVE IS SCREENING MAMMOGRAPHY FOR PREVENTING BREAST CANCER MORTALITY?
ANDREW M. KAUNITZ, MD (AUGUST 2020)
Discordant results on screening mammography
In regard to the discussion on screening mammography for preventing breast cancer mortality, I would like to call attention to a more recent study than the ones referenced in the article. The study by Duffy and colleagues was from Sweden and included almost 550,000 women.1 Results of the study showed a statistically significant reduction of 41% in 10-year mortality and a 25% reduction in the incidence of advanced-stage disease at the time of diagnosis in women who underwent routine screening mammograms. In Sweden, routine screening is defined as a mammogram every 18 months for women aged 40 to 54 years and every 24 months after that, up to age 69.
I do not know if we will ever come to a consensus on the utility of mammograms or how often they should be done, but I wanted to illustrate this counterpoint.
Lisa Gennari, MD
Cincinnati, Ohio
Reference
1. Duffy SW, Tabar L, Yen AM, et al. Mammography screening reduces rates of advanced and fatal breast cancers: results in 549,091 women. Cancer. 2020;126:2971-2979.
Dr. Kaunitz responds
I thank Dr. Gennari for her interest in the Examining the Evidence discussion that summarized the findings of an article from Australia published in late summer of last year.1 That article indicated that as screening mammograms became common in the state of Victoria over several decades, the incidence of advanced breast cancer doubled, mirroring findings from the United States, Holland, and Norway. During the same time period, breast cancer mortality declined substantially. The authors concluded that all of the decline in breast cancer mortality that they observed since 1994 could be attributed not to screening mammography but rather to the introduction and uptake of adjuvant therapy (tamoxifen and chemotherapy).
In contrast, in the article Dr. Gennari cites, also published last summer, the authors found that the widespread uptake of screening mammograms among women residing in 9 counties in Sweden was associated with a decline in the incidence of advanced breast cancer. I am not able to explain these discrepant findings. However, as the authors pointed out, they employed a new strategy: measuring the incidence of breast cancer that proved fatal one decade after diagnosis.
Differing findings and interpretations of data that address benefits and risks of screening mammography lead to differing recommendations from professional societies and confusion among clinicians and our patients. Although it can be challenging in the constraints of time allotted for well-woman visits, I try to engage in shared decision making with my patients regarding when to start/stop mammography as well as frequency of screening.
Reference
- Burton R, Stevenson C. Assessment of breast cancer mortality trends associated with mammographic screening and adjuvant therapy from 1986 to 2013 in the state of Victoria, Australia. JAMA Netw Open. 2020:3:e208249.
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