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.
Complex Anal Fistulae
Overview and Symptoms
Overview and Symptoms
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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.
Treatment
Surgery is required to close anal fistulae. A number of procedures are available depending on the fistulae’s locations and complexity.