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anal cancer

(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; drawing shows the esophagus, liver, stomach, colon, small intestine, rectum, and anus.Enlarge this image in new window
Anatomy of the lower gastrointestinal (digestive) system showing the colon, rectum, and anus. Other organs that make up the digestive system are also shown.
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