DB50.1 Anal fistula

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

Anal fistula is an abnormal communication, hollow tract lined with granulation tissue connecting the primary opening inside the anal canal to a secondary opening in the perineal skin. They are usually associated with anorectal abscesses, and they are thought to be a chronic condition after an abscess evacuation.

postcoordination

synonyms

• Anal fistula
• Allingham ulcer
• perianal fistula
• fistula in ano

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