Acute gastritis as the cause of otherwise unexplained upper gastrointestinal hemorrhage.
D000208:Acute Disease; D005756:Gastritis / Q000150:complications*; D006471:Gastrointestinal Hemorrhage; D041981:Gastrointestinal Tract; D006470:Hemorrhage / Q000209:etiology*; D006801:Humans
GASTRITIS/complications; GASTROINTESTINAL SYSTEM/hemorrhage; HEMORRHAGE/etiology and pathogenesis