title: A middle-aged man.
authors.affiliation: Department of Medicine, Faculty of Medicine, University of Kelaniya, P O Box 6, Ragama, Sri Lanka.
authors.forename: H J
authors.initials: HJ
authors.lastname: de Silva
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis; D003951:Diagnostic Errors; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis*