title: Gastrointestinal hemorrhage caused by colonic varices.
mesh_terms: D003106:Colon / Q000098:blood supply*; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014648:Varicose Veins / Q000150:complications*