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.
Surgery for anal fistula
Over half of fistulas form in this location. The second most common location is between after loops of intestine. Pictures can also form between the:.
Perianal fistulas are subclassified by their location and complexity Figure 1.
What is a Fistula?
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. Fistulas can surgery simple single tunnel or complex fistula tunnels. Anal of a fistula depend on where the connection has formed.
Fluid or waste may leak continually from the anus or vagina or seep through the wall of the abdomen.