Gastrointestinal hemorrhage.
D003937:Diagnosis, Differential; D004240:Diverticulum / Q000150:complications; D004932:Esophageal and Gastric Varices / Q000150:complications; D005756:Gastritis / Q000150:complications; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D009369:Neoplasms / Q000150:complications; D013276:Stomach Ulcer / Q000150:complications