13Diseases of the digestive system Diseases of anal canal Acquired anatomical alterations of the anal canal
DB50
category
Fissure or fistula of anal regions
Definition Anal fissure and fistula are the common disorders of anal regions. An anal fissure is a superficial linear tear in the anoderm that is distal to the dentate line. An anal fistula is an inflammatory tract between the anal canal and the skin.
Nearby in Acquired anatomical alterations of the anal canal
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
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