title: Annular pancreas diagnosed by endoscopic retrograde-choledocho-pancreatography (ERCP).
mesh_terms: D001466:Barium Sulfate; D002760:Cholangiopancreatography, Endoscopic Retrograde; D004380:Duodenal Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010179:Pancreas / Q000002:abnormalities*; D010183:Pancreatic Ducts / Q000000981:diagnostic imaging*
chemical_list: D001466:Barium Sulfate