title: Gastroduodenal fistula complicating a prepyloric ulcer.
mesh_terms: D000328:Adult; D004378:Duodenal Diseases / Q000150:complications* / Q000175:diagnosis; D004724:Endoscopy; D005747:Gastric Fistula / Q000150:complications* / Q000175:diagnosis; D005773:Gastroscopy; D006801:Humans; D007412:Intestinal Fistula / Q000150:complications* / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D013276:Stomach Ulcer / Q000150:complications*