University of California San Francisco

Conditions & Procedures

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Abdominal Adhesions

This content is provided as a service of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), part of the National Institutes of Health

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…