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What causes anal fistula

Why do we have so much trouble treating anal fistula?

A fistula is an abnormal connection between an organ and another structure. Fistulas develop when an organ becomes inflamed or injured. The most common location for a fistula is around the anus.

Anal half of fistulas form in this location. The second most common causes is between 2 loops of intestine.

Anal abscess and fistula

Fistulas fistula also form between the:. Perianal fistulas are subclassified by their location and complexity Figure 1. These are the internal and external sphincters.

Fistulas can form across 1 or both sphincters Figure 2. Some fistulas start high up in the rectum and do not cross the sphincters at all.

Anal fistula - Causes of an anal fistula

Fistulas can be simple single tunnel or complex multiple tunnels. Symptoms of a fistula depend on where the connection has formed.

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Fluid or waste may leak continually from the anus or vagina or seep through the wall of the abdomen. What fistula between the intestine and bladder can cause a urinary tract infection that keeps returning. Fistulas between 2 loops of the intestine may not cause swinger tales free gallery symptoms.