Colon Cancer
Alternate Names : Cancer - Colon, Colorectal Cancer
Definition
The colon and rectum are part of the large intestine (large bowel). Colon and rectum cancers, which are sometimes referred to together as "colorectal cancer," arise from the lining of the large intestine. (When cancer arises from the lining of an organ like the large intestine, it is called a carcinoma.)
Other types of colon cancer are rare, and include lymphoma, carcinoid tumors, melanoma, and sarcomas. Use of the term "colon cancer" for the rest of this article refers to colon "carcinoma" and not the other, rare types of colon cancer.
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