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Colon and Rectal Cancer 

 

Cancer of the colon or rectum is often called colorectal cancer. The colon and the rectum are part of the large intestine, which is part of the digestive system. Tumors found in the colon or rectum may be benign (noncancerous) growths of tissue (polyps) or malignant cancerous growths of tissue that may spread to other parts of the body.

Anal cancer is a disease in which malignant (cancer) cells form in the tissues of the anus. The anus is the end of the large intestine, below the rectum, through which stool (solid waste) leaves the body. The anus is formed partly from the outer, skin layers of the body and partly from the intestine. Two ring-like muscles, called sphincter muscles, open and close the anal opening to let stool pass out of the body. The anal canal, the part of the anus between the rectum and the anal opening, is ...


Colorectal Cancer as related to Anal Cancer