title: The spectrum of portal hypertension in the gastrointestinal tract.
authors.forename: A M
authors.initials: AM
authors.lastname: Kassem
mesh_terms: D003113:Colonoscopy; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D006975:Hypertension, Portal / Q000150:complications*; D012007:Rectum / Q000098:blood supply*; D014648:Varicose Veins / Q000209:etiology*