University of California San Francisco

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Abdominal Adhesions

Abdominoperineal Resection

Surgery, typically for anal cancer, that removes the anus, the rectum, and part of the sigmoid colon through an incision made in the abdomen. The end of the intestine is attached to an opening in the surface of the abdomen and body waste is collected in a disposable bag…

Anal Cancer

Anal Fistula

Anal fistulas are generally common among those who have had an anal abscess. Treatment is usually necessary to reduce the chances of infection in an anal fistula, as well to alleviate symptoms. An anal fistula is defined as a small tunnel with an internal opening in the anal…