title: Ulcerating superficial gastric adenocarcinoma presenting with massive upper gastrointestinal hemorrhage.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis*; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis*; D013276:Stomach Ulcer / Q000209:etiology*