Anal fistula classification: Difference between revisions
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==Classification== | ==Classification== | ||
Anal fistulas are classified into the four types based on the relationship to 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> | Anal fistulas are classified into the four types based on the relationship to 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 | *Intersphincteric | ||
*Transsphincteric | *Transsphincteric | ||
*Suprasphincteric | *Suprasphincteric | ||
*Extrasphincteric | *Extrasphincteric | ||
Anal fistulas are classified into two categories based on the risk factors associated: | Anal fistulas are classified into two categories based on the risk factors associated: | ||
*Simple anal fistula: | *Simple anal fistula: | ||
Revision as of 15:30, 22 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 relationship to sphincter:[1]
- Intersphincteric
- Transsphincteric
- Suprasphincteric
- Extrasphincteric
Anal fistulas are classified into two categories based on the risk factors associated:
- Simple anal fistula:
- There are no risk factors associated with simple anal fistula.
- Treatment of simple anal fistula results in low incidence of fecal incontinence and poor wound healing.
- Complex anal fistula:
- There are many risk factors associated with complex anal fistula e.g preexisting incontinence, recurrent fistula, local irradiation, chronic diarrhea, or Crohn's disease.
- There are multiple tracts found in complex anal fistula and is anterior in the location in females.