title: Unusual sources of gastrointestinal bleeding.
authors.affiliation: Division of Gastroenterology and Hepatology, University of New Mexico, Albuquerque, NM, USA, dcastresana@salud.unm.edu.
authors.forename: Daniel
authors.initials: D
authors.lastname: Castresana
authors.forename: Archana
authors.initials: A
authors.lastname: Kaza
mesh_terms: D000328:Adult; D003097:Collateral Circulation; D003113:Colonoscopy; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D007421:Intestine, Small / Q000098:blood supply* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D019168:Portasystemic Shunt, Transjugular Intrahepatic; D015911:Sclerotherapy; D012771:Shock, Hemorrhagic / Q000209:etiology; D014471:Umbilical Veins; D014648:Varicose Veins / Q000150:complications* / Q000601:surgery