title: Endoscopic localization of a duodenal wall tumor in Zollinger-Ellison syndrome.
mesh_terms: D007516:Adenoma, Islet Cell / Q000150:complications / Q000175:diagnosis*; D000328:Adult; D004379:Duodenal Neoplasms / Q000150:complications / Q000175:diagnosis*; D004386:Duodenum; D004724:Endoscopy; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D008297:Male; D008722:Methods; D015043:Zollinger-Ellison Syndrome / Q000209:etiology*