title: Diseases of the alimentary system. Haematemesis and melaena.
mesh_terms: D004724:Endoscopy; D006396:Hematemesis / Q000175:diagnosis / Q000628:therapy*; D006801:Humans; D008551:Melena / Q000175:diagnosis / Q000628:therapy*; D010438:Peptic Ulcer Hemorrhage / Q000150:complications; D011182:Postoperative Care