Question: I am a 61 year old male, with a history of gastrointestinal problems, mostly spastic colitis and abdominal adhesions from peritonitis which came about as a result of a ruptured appendix when I was 17 years old. My doctor tried to perform a colonoscopy on me but the adhesions made it almost impossible to examine my intestines closely. He was only able to examine a third of my (large?) intestine and found nothing unusual but the examination was incomplete and I want to have it done properly for my own peace of mind. After three attempts, he told me he could not complete the procedure and said the results were inconclusive. I have been experiencing upset stomachs lately and my stool is now very dark brown, but not black. I am concerned because and fearful of colon cancer, which is a distinct possibility. I neither smoke nor do I drink for obvious reasons but I am plagued by worries because of the possibility of colorectal cancer, but since the colonoscopies were never completed, I am at a loss for a solution to this problem. What are my alternatives? Colon cancer does not run in my family, but in the absence of conclusive findings, naturally I am worried. What would you suggest?