title: Unusual presentation of anorectal carcinoma.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis*; D000368:Aged; D001005:Anus Neoplasms / Q000175:diagnosis; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis*