Commentary

CRC: Troubling Mortality Rates for a Preventable Cancer


 

This transcript has been edited for clarity.

The American Cancer Society has just published its cancer statistics for 2024. This is an annual report, the latest version of which has some alarming news for gastroenterologists. Usually, we think of being “number one” as a positive thing, but that’s not the case this year when it comes to the projections for colorectal cancer.

But first, let’s discuss the report’s overall findings. Broadly speaking, the news is quite good in that there’s been an aversion of over 4 million deaths since 1991. That decline over the past four decades is due to reductions in smoking, earlier detection, and improved screening and treatments for localized or metastatic disease. But these gains are now threatened by some offsets that we’re seeing, with increasing rates of six of the top 10 cancers in the past several years.

Increasing Rates of Gastrointestinal Cancers

The incidence rate of pancreas cancer has increased from 0.6% to 1% annually.

Pancreas cancer has a 5-year relative survival rate of 13%, which ranks as one of the three worst rates for cancers. This cancer represents a real screening challenge for us, as it typically presents asymptomatically.

Women have experienced a 2%-3% annual increase in incidence rates for liver cancer.

I suspect that this is due to cases of fibrotic liver disease resulting from viral hepatitis and metabolic liver diseases with nonalcoholic fatty liver and advanced fibrosis (F3 and F4). These cases may be carried over from before, thereby contributing to the increasing incremental cancer risk.

We can’t overlook the need for risk reduction here and should focus on applying regular screening efforts in our female patients. However, it’s also true that we require better liver cancer screening tests to accomplish that goal.

In Those Under 50, CRC the Leading Cause of Cancer Death in Men, Second in Women

I really want to focus on the news around colorectal cancer.

To put this in perspective, in the late 1990s, colorectal cancer was the fourth leading cause of death in men and women. The current report extrapolated 2024 projections using the Surveillance, Epidemiology, and End Results (SEER) database ending in 2020, which was necessary given the incremental time it takes to develop cancers. The SEER database suggests that in 2024, colorectal cancer in those younger than 50 years of age will become the number-one leading cause of cancer death in men and number-two in women. The increasing incidence of colorectal cancer in younger people is probably the result of a number of epidemiologic and other reasons.

The current report offers evidence of racial disparities in cancer mortality rates in general, which are twofold higher in Black people compared with White people, particularly for gastric cancer. There is also an evident disparity in Native Americans, who have higher rates of gastric and liver cancer. This is a reminder of the increasing need for equity to address racial disparities across these populations.

But returning to colon cancer, it’s a marked change to go from being the fourth-leading cause of cancer death in those younger than 50 years of age to being number one for men and number two for women.

Being “number one” is supposed to make you famous. This “number one,” however, should in fact be infamous. It’s a travesty, because colorectal cancer is a potentially preventable disease.

As we move into March, which happens to be Colorectal Cancer Awareness Month, hopefully this fires up some of the conversations you have with your younger at-risk population, who may be reticent or resistant to colorectal cancer screening.

We have to do better at getting this message out to that population at large. “Number one” is not where we want to be for this potentially preventable problem.

Dr. Johnson is professor of medicine and chief of gastroenterology at Eastern Virginia Medical School in Norfolk, Virginia, and a past president of the American College of Gastroenterology. His primary focus is the clinical practice of gastroenterology. He has published extensively in the internal medicine/gastroenterology literature, with principal research interests in esophageal and colon disease, and more recently in sleep and microbiome effects on gastrointestinal health and disease. He has disclosed ties with ISOTHRIVE and Johnson & Johnson.

A version of this article appeared on Medscape.com.

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