Colon cancer is a type of cancer that begins with the colon (large intestine). The colon is part of the digestive system. The function of the colon is to reabsorb fluids and process waste products from the body. The colon consist of four parts: descending colon, ascending colon, transverse colon, and sigmoid colon. Colon cancer is also known as colorectal cancer or rectal cancer or rectum cancer.
Colorectal cancer begins as a small, noncancerous (benign) clumps of cells which forms inside the colon. Some of the colon cancer is benign and some overtime becomes malignant.
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