title: Duodenal duplication. Surgical treatment using a unique method of locating the ampulla of Vater.
mesh_terms: D014670:Ampulla of Vater / Q000033:anatomy & histology; D002758:Cholangiography; D003560:Cysts / Q000601:surgery; D004386:Duodenum / Q000002:abnormalities* / Q000601:surgery; D006801:Humans; D008297:Male; D008751:Methylene Blue; D008875:Middle Aged
chemical_list: D008751:Methylene Blue