[Mucus-secreting cancer in an anal fistula].
D002288:Adenocarcinoma, Mucinous / Q000150:complications* / Q000209:etiology; D001005:Anus Neoplasms / Q000150:complications*; D005401:Fissure in Ano / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged