While patients of IBD do have an increased risk of  colorectal cancer this is usually caught much earlier than the general population in routine surveillance of the colon by colonoscopy, and therefore patients are much more likely to survive.
Inflammatory bowel disease screening
Irritable bowel syndrome screening
Colon polyps screening
Prostate cancer screening
Gastritis screening
Ulcerative colitis screening
Barrett's esophagus screening
Acinic cell carcinoma screening