Anal fistula classification: Difference between revisions
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==Classification== | ==Classification== | ||
Anal fistulas are classified into the four types based on the location of sphincter: | Anal fistulas are classified into the four types based on the location of sphincter:<ref name="pmid1267867">{{cite journal |vauthors=Parks AG, Gordon PH, Hardcastle JD |title=A classification of fistula-in-ano |journal=Br J Surg |volume=63 |issue=1 |pages=1–12 |year=1976 |pmid=1267867 |doi= |url=}}</ref> | ||
*Intersphincteric: Starts from dentate line ending in the perianal skin. | *Intersphincteric: Starts from dentate line ending in the perianal skin. | ||
*Transsphincteric: Starts from the external sphincter, going along a portion of the internal and external sphincter and ending in the skin overlying buttocks. | *Transsphincteric: Starts from the external sphincter, going along a portion of the internal and external sphincter and ending in the skin overlying buttocks. | ||
Revision as of 17:59, 15 January 2018
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Anal fistula Microchapters |
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Diagnosis |
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Treatment |
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Anal fistula classification On the Web |
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American Roentgen Ray Society Images of Anal fistula classification |
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Risk calculators and risk factors for Anal fistula classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Manpreet Kaur, MD [2]
Overview
Classification
Anal fistulas are classified into the four types based on the location of sphincter:[1]
- Intersphincteric: Starts from dentate line ending in the perianal skin.
- Transsphincteric: Starts from the external sphincter, going along a portion of the internal and external sphincter and ending in the skin overlying buttocks.
- Suprasphincteric: Starts from the anal crypt and ends in the ischiorectal fossa.
- Extrasphincteric: Starts high in the anal canal and ending in the skin overlying the buttocks.