Duodenotomy.
D000368:Aged; D001660:Biliary Tract Diseases / Q000601:surgery; D004386:Duodenum / Q000601:surgery*; D006801:Humans; D007902:Length of Stay; D010182:Pancreatic Diseases / Q000601:surgery; D011183:Postoperative Complications / Q000453:epidemiology*; D012189:Retrospective Studies; D013514:Surgical Procedures, Operative / Q000401:mortality*