title: Gastroduodenal fistula or double pylorus?
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D004378:Duodenal Diseases / Q000175:diagnosis*; D005747:Gastric Fistula / Q000175:diagnosis*; D005773:Gastroscopy; D006801:Humans; D007412:Intestinal Fistula / Q000175:diagnosis*; D008297:Male; D011708:Pylorus / Q000002:abnormalities*