A new concept of the anatomy of the anal sphincter mechanism and the physiology of defecation. VII. Anal fistula: a simplified classification.

@article{Shafik1979ANC,
  title={A new concept of the anatomy of the anal sphincter mechanism and the physiology of defecation. VII. Anal fistula: a simplified classification.},
  author={Ahmed Shafik},
  journal={Diseases of the colon and rectum},
  year={1979},
  volume={22 6},
  pages={408-14}
}
  • Ahmed Shafik
  • Published 1979 in Diseases of the colon and rectum
The pathology of anal fistulas was studied in 300 patients and a simple classification is put forward. Two main types of fistula are recognized: intrasphincteric and extrasphincteric, according to the relation of the track to the external sphincter. All fistulas start as a central space infection which either remains confined to the intrasphincteric compartment or spreads extrasphincterically. Intrasphincteric fistulas include both central and intersphincteric fistulas. The latter fistula, as… CONTINUE READING

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