Tumorous heterotopic gastric mucosa in the small intestine.
D000328:Adult; D000013:Congenital Abnormalities / Q000473:pathology; D004386:Duodenum / Q000002:abnormalities / Q000473:pathology; D005753:Gastric Mucosa / Q000002:abnormalities*; D006801:Humans; D007421:Intestine, Small / Q000002:abnormalities*; D007583:Jejunum / Q000002:abnormalities / Q000473:pathology; D008297:Male; D008875:Middle Aged