Carcinoma arising in anal fistula.
D000328:Adult; D001005:Anus Neoplasms / Q000209:etiology* / Q000473:pathology; D001706:Biopsy; D002277:Carcinoma / Q000209:etiology; D005260:Female; D005401:Fissure in Ano / Q000150:complications* / Q000473:pathology; D006801:Humans