[Migration of Internal Pancreaticojejunostomy Stents into the Bile Ducts in Patients Undergoing Pancreaticoduodenectomy].

The patient was a 68-year-old male. Pancreaticoduodenectomy(PD)for papillary carcinoma was performed. Computed tomography(CT)3 months after surgery revealed the migration of a lost Pit-stent into the bile duct. However, there were no symptoms. On CT 2 years after surgery, the lost stent had spontaneously fallen off. However, hepaticolithiasis was observed, and lithotripsy was performed using endoscopic retrograde cholangiopancreatography(ERCP). A pancreatic fistula after PD is an important complication. To prevent pancreatic fistulae, pancreatic stenting at the site of PD is performed in many cases. The postoperative in vivo kinetics of a lost stent remains to be clarified. Several case reports on complications have been published. In this study, we report a patient in whom the migration of a lost Pit-stent into the intrahepatic bile duct after PD led to hepaticolithiasis, and review the literature.