The long, tube-shaped organ in the abdomen that is part of the digestive tract. The bowel has two parts: the small and large bowel. The large bowel includes the colon and the rectum.

An operation for rectal cancer, which involves removing part of the colon and the rectum and anus and creating a permanent colostomy. Also used for anal cancer.

The surgical removal of the entire colon and rectum….

A procedure in which a doctor inserts a sigmoidoscope into the anus to examine the rectum and lower colon….