title: Duodenal somatostatinoma.
mesh_terms: D007516:Adenoma, Islet Cell / Q000473:pathology*; D000368:Aged; D004379:Duodenal Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D013005:Somatostatinoma / Q000473:pathology*