title: Spontaneous choledochoduodenal fistula after metallic biliary stent placement in a patient with ampulla of vater carcinoma.
abstract: Biliary stent-related enteric perforations are very rare complications that are caused by the sharp end of a metallic stent, stent migration, or tumor invasion. Moreover, the choledochoduodenal fistula resulting from metallic biliary stent-induced perforation is extremely rare. Here, we report a case in which a spontaneous choledochoduodenal fistula occurred after biliary metallic stent placement in a patient with an Ampulla of Vater carcinoma but was successfully managed by supportive treatments, including nasobiliary drainage. This case might have occurred as the result of a rupture of the bile duct following pressure necrosis and inflammation caused by impacted calculi and food materials over the tumor ingrowth in the uncovered biliary stent.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Soon Chun Hyang University College of Medicine, Cheonan Hospital, Cheonan, Korea.
authors.forename: Tae Hoon
authors.initials: TH
authors.lastname: Lee
authors.forename: Sang-Heum
authors.initials: SH
authors.lastname: Park
authors.forename: Sang Pil
authors.initials: SP
authors.lastname: Kim
authors.forename: Sae Hwan
authors.initials: SH
authors.lastname: Lee
authors.forename: Chang-Kyun
authors.initials: CK
authors.lastname: Lee
authors.forename: Il-Kwun
authors.initials: IK
authors.lastname: Chung
authors.forename: Hong Soo
authors.initials: HS
authors.lastname: Kim
authors.forename: Sun-Joo
authors.initials: SJ
authors.lastname: Kim