Endoscopy for haematemesis and gastric ulcer.
D003937:Diagnosis, Differential; D004724:Endoscopy; D006396:Hematemesis / Q000175:diagnosis*; D006801:Humans; D010438:Peptic Ulcer Hemorrhage / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis*; D013276:Stomach Ulcer / Q000150:complications*