Basaloid carconoma of the anal canal.
D000328:Adult; D000368:Aged; D001005:Anus Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D002295:Carcinoma, Transitional Cell / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged