Treatment depends on where the fistula lies, and which parts of the internal and external anal sphincters it crosses. LIFT Ligation of the intersphincteric fistula tract This procedure is used for fistulas that form between the internal and external sphincters. Most fistulas are thought to arise as a result of cryptoglandular infection with resultant perirectal abscess. Anal fistula plural fistulae , or fistula-in-ano , is a chronic abnormal communication between the epithelialised surface of the anal canal and usually the perianal skin. The anus is the external opening through which feces are expelled from the body. MRI reveals the route of the fistula and location of abscesses.
Mapping the fistula tracts and identifying internal openings can be difficult, especially for severe cases. Position of the mucosal opening on axial images using the anal clock. However, locating its visual path often requires various tools, and often times it may not be seen until surgery. Mayo Clinic in Rochester, Minn.
What are other conditions that can cause a fistula?
On the left an example of a complex fistula. A high fiber diet softens the stool and makes it easier to make a bowel movement, eliminating straining. So many cases have been reported that the destruction of the vagina is considered a war injury and recorded by doctors as a crime of combat. The extrasphincteric fistula is uncommon and only seen in patients who had multiple operations. Mayo specialists use the latest technology, including the following:.
Is simple fistula-in-ano simple?. Overview Diagnosis and Tests Management and Treatment. How are internal fistulas evaluated? For this test, the doctor will put a tube with a camera on the end into your anus to look at the inside of your bowels. Complex fistula On the left an example of a complex fistula. The treatment of anal fistula: