Complex Anal Fistulae

An anal fistula is an abnormal hollow, infected space between the bowel and the anus that most often is a result of an anal abscess that has drained.

Overview and Symptoms
Sometimes described as a channel or a tunnel, it is the area in which the pus from the abscess used to be. An anal fistula can cause skin irritation, pain, swelling, blood or pus in the stool, constipation, and fever. More than one fistula (fistulae) can be present. A fistula does not generally heal on its own.


Surgery is required to close anal fistulae. A number of procedures are available depending on the fistulae’s locations and complexity.

Colon and Rectal Surgery

The Division of Colon and Rectal surgery offers expertise for patients with disorders and cancers of the colon, rectum and intestine.

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