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The main working area of the large bowel, where water is removed from solid waste. Its four parts are the ascending colon, transverse colon, descending colon and sigmoid colon.

transverse colon

The section of the colon between the ascending and descending colon….

sigmoid colon

The section of the colon below the descending colon and above the rectum and anus….

descending colon

The left side of the colon.

ascending colon

The right side of the bowel.

bowel cancer

Cancer of the large bowel; also known as colorectal cancer, colon cancer or rectal cancer.


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


The surgical removal of the entire colon and rectum….

large bowel

Part of the lower gastrointestinal tract. The large bowel stores waste until it leaves the body as faeces. Its four main sections are the caecum, colon, rectum and anus. Also called the large intestine.

gastrointestinal (GI) tract

The passage from the mouth to the anus that allows a person to digest food and eliminate waste. The lower GI tract includes the colon, rectum and anus.