Will I develop colorectal cancer due to ulcerative colitis?

Question

Hello doctor,

I have had ulcerative colitis for twelve years, and my gastroenterologist has told me that because of the duration and extent of my disease, I am now at significantly elevated risk of developing colorectal cancer and need surveillance colonoscopies every one to two years for the rest of my life. I recently lost my father to colon cancer, which has made me absolutely terrified.

I want to understand at what point long-standing ulcerative colitis actually transforms into cancer at the cellular level.
Does the biologic medication I am currently taking to control my inflammation also reduce my cancer risk?
What warning signs should I watch for between my surveillance colonoscopies that might indicate something has already changed inside my colon?

Kindly help.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

Your concern is understandable. Long-standing ulcerative colitis can increase the risk of colorectal cancer, especially when the disease involves a large part of the colon and has been present for more than eight to ten years. The reason is chronic inflammation.

Over time, persistent inflammation can damage the lining cells of the colon. These cells may gradually develop genetic changes, moving through stages called inflammation dysplasia (precancerous change) to cancer. This process usually takes many years, which is why regular surveillance is effective at detecting problems early.

Your doctor’s recommendation for a periodic colonoscopy every one to two years is standard practice after about a decade of disease. During these procedures, doctors carefully examine the colon and take targeted biopsies to detect dysplasia before it becomes cancer.

Good control of inflammation is very important. Biologic therapies such as Infliximab or Adalimumab help suppress chronic inflammation, and evidence suggests that maintaining mucosal healing can lower the long-term cancer risk compared with uncontrolled disease.

Between colonoscopies, warning signs that should prompt medical review include:

Persistent change in bowel pattern beyond your usual ulcerative colitis (UC) symptoms.
New or worsening rectal bleeding.
Unexplained weight loss.
Persistent abdominal pain or anemia.
Feeling a new abdominal mass or progressive fatigue.

However, many early precancerous changes cause no symptoms, which is why surveillance colonoscopy remains the most reliable protection. With regular monitoring and good control of inflammation, most patients with ulcerative colitis never develop colorectal cancer, and any abnormal changes are usually detected at a very early, treatable stage.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.