[A case of gastric malignant polyp prolapsing into the duodenum].
D000230:Adenocarcinoma / Q000473:pathology*; D004386:Duodenum; D006801:Humans; D008297:Male; D008875:Middle Aged; D011127:Polyps / Q000473:pathology*; D013274:Stomach Neoplasms / Q000473:pathology*