title: An unusual cause of massive gastrointestinal hemorrhage. Carcinoid tumor of the ileum.
mesh_terms: D002276:Carcinoid Tumor / Q000150:complications*; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D007082:Ileum; D007414:Intestinal Neoplasms / Q000150:complications*; D008297:Male; D008875:Middle Aged