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Anal fissure

Definition: A painful linear ulcer at the margin of the anus. It appears as a crack or slit in the mucous membrane of the anus and is very painful and difficult to heal. (Dorland, 27th ed & Stedman, 25th ed)

Synonyms (terms occurring on more labels are shown first): anal fissure, anal ulcer, anal fissures

More information: PubMed search and possibly Wikipedia

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