Living Well with Colitis or Crohn’s
Why Do I Need Extra Cancer Screenings?
Having more colonoscopies isn’t fun, but it can save your life.
When it comes to screening tests, colonoscopies rank right up there on the list of everyone’s least favorite. For most people, this test to look for colorectal cancer is just a once-every-10-years annoyance. But if you’ve had inflammatory bowel disease (IBD) — either ulcerative colitis or Crohn’s disease — for a long time, you’ll need to have the test done every year or two.
The fact is, if you’ve had IBD for more than 8 years, you need more frequent colonoscopies because you’re at a higher risk of developing colon cancer, says gastroenterologist Roshini Raj, MD, assistant professor of medicine at NYU Langone Medical Center. “And because colon cancer is treatable when caught early, screening and looking out for warning symptoms are very important,” she says.
Why Is Your Risk Higher?
The reason having IBD for a long time puts you at greater risk for colorectal cancer has to do with inflammation. Ulcerative colitis causes inflammation in the lining of your colon (large intestine). Crohn’s disease can cause inflammation in any part of your digestive tract, including the colon. Over time, that chronic inflammation can make it more likely that you’ll develop colon cancer. And the more of your colon that has chronic inflammation, the higher your risk.
Dr. Raj says colon cancer has become less common in the IBD population in recent years, but the reason for the decline is unknown. “It may be due to more screening, better IBD treatments and more effective colonoscopy techniques,” she says. “But since we don’t know how much each of these is contributing to the decrease, the screening recommendations haven’t changed.”
Why Screening Matters
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