title: Endoscopic resection of tumors of the ampulla of Vater: how far up and how deep down can we go?
authors.forename: Stefan
authors.initials: S
authors.lastname: Seewald
authors.forename: Salem
authors.initials: S
authors.lastname: Omar
authors.forename: Nib
authors.initials: N
authors.lastname: Soehendra
mesh_terms: D000465:Algorithms; D014670:Ampulla of Vater; D003138:Common Bile Duct Neoplasms / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008207:Lymphatic Metastasis; D009361:Neoplasm Invasiveness; D016717:Sphincterotomy, Endoscopic