[Chief complaints: abdominal pain and melana].
D000005:Abdomen; D000236:Adenoma / Q000150:complications*; D006801:Humans; D008297:Male; D008551:Melena / Q000209:etiology; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications*; D010146:Pain; D013274:Stomach Neoplasms / Q000150:complications*