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Questions About Cancer? 1-800-4-CANCER

NCI Dictionary of Cancer Terms

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colorectal cancer  listen  (KOH-loh-REK-tul KAN-ser)

  Cancer that develops in the colon (the longest part of the large intestine) and/or the rectum (the last several inches of the large intestine before the anus).

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Parts of the colon; drawing shows the ascending colon, cecum, transverse colon, descending colon, sigmoid colon, and rectum.