Duodenogastric reflux and pyloric surgery.
D001466:Barium Sulfate; D004386:Duodenum / Q000000981:diagnostic imaging* / Q000502:physiology; D006801:Humans; D008722:Methods; D011708:Pylorus / Q000000981:diagnostic imaging* / Q000601:surgery; D011859:Radiography; D013270:Stomach / Q000502:physiology; D013276:Stomach Ulcer / Q000601:surgery*
D001466:Barium Sulfate