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NCI Dictionary of Cancer Terms


anal cancer  listen  (AY-nul KAN-ser)

  Cancer that forms in tissues of the anus. The anus is the opening of the rectum (last part of the large intestine) to the outside of the body.

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Gastrointestinal (digestive) system anatomy; shows esophagus, liver, stomach, colon, small intestine, rectum, and anus.