title: Is preoperative angiography useful in patients with periampullary tumors?
authors.forename: S S
authors.initials: SS
authors.lastname: Sikora
authors.forename: V K
authors.initials: VK
authors.lastname: Kapoor
mesh_terms: D014670:Ampulla of Vater; D003138:Common Bile Duct Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D011300:Preoperative Care; D011859:Radiography