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 examination of the bowel area using a white contrast liquid called barium. The barium is inserted into the rectum and x-rays are taken.

A surgical procedure to remove cancer in 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.