[Carcinoma arising in an anal fistula].
D000230:Adenocarcinoma / Q000209:etiology*; D000368:Aged; D001005:Anus Neoplasms / Q000209:etiology*; D005401:Fissure in Ano / Q000150:complications*; D006801:Humans; D008297:Male; D013997:Time Factors
Carcinom utgått fra naalfistel.