title: A diagnostic approach to colon bleeding.
mesh_terms: D003108:Colonic Diseases / Q000000981:diagnostic imaging*; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography