Colon varices: a rare cause of lower gastrointestinal bleeding.
D002648:Child; D003106:Colon / Q000098:blood supply*; D003108:Colonic Diseases / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging* / Q000209:etiology*; D006801:Humans; D008297:Male; D011859:Radiography