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><ref name="pmid1555083">{{cite journal |vauthors=Seow-Choen F, Nicholls RJ |title=Anal fistula |journal=Br J Surg |volume=79 |issue=3 |pages=197–205 |year=1992 |pmid=1555083 |doi= |url=}}</ref> | ||
*Intersphincteric | *Intersphincteric | ||
*Transsphincteric | *Transsphincteric | ||
Revision as of 15:37, 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][2]
- Intersphincteric
- Transsphincteric
- Suprasphincteric
- Extrasphincteric
Anal fistulas are classified into two categories based on the risk factors associated:
- Simple anal fistula:[3]
- 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:[4]
- 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.
References
- ↑ Parks AG, Gordon PH, Hardcastle JD (1976). "A classification of fistula-in-ano". Br J Surg. 63 (1): 1–12. PMID 1267867.
- ↑ Seow-Choen F, Nicholls RJ (1992). "Anal fistula". Br J Surg. 79 (3): 197–205. PMID 1555083.
- ↑ Sangwan YP, Rosen L, Riether RD, Stasik JJ, Sheets JA, Khubchandani IT (1994). "Is simple fistula-in-ano simple?". Dis. Colon Rectum. 37 (9): 885–9. PMID 8076487.
- ↑ Fazio VW (1987). "Complex anal fistulae". Gastroenterol. Clin. North Am. 16 (1): 93–114. PMID 3298058.