Colon cancer is very rare in children; however, anyone no matter what age who has chronic unexplained constipation (difficulty having bowel movements), abdominal distention (bloating of the belly) and bleeding from the rectum (where poop leaves the body) should see their health care provider and get checked. People who have a history of inflammatory bowel disease (IBD) or ulcerative colitis are at a higher risk for developing colon cancer.