A 64-year-old woman with choledocholithiasis underwent endoscopic retrograde cholangiopancreatography (ERCP) with stone extraction and biliary and pancreatic duct (PD) stent placement. She subsequently presented with postprandial abdominal distension of a few weeks’ duration. The patient had undergone a laparoscopic cholecystectomy following the ERCP; however, a repeat ERCP nearly 2 months after her initial endoscopy revealed a proximally migrated PD stent that could not be retrieved, prompting transfer to our center.
Repeat ERCP revealed a normal-appearing PD with a retained PD stent, which had migrated towards the pancreas. The ventral PD was deeply cannulated with a short-nosed traction autotome, and a pancreatic sphincterotomy was performed. A pediatric biopsy forceps was then advanced into the duct over the wire, and closed over the pancreatic stent, but the stent appeared to be embedded. Further attempts to extract the PD stent with a rat tooth forceps and retrieval basket were also unsuccessful. The PD was then dilated with a 4-mm hurricane balloon and the pediatric biopsy forceps was again advanced over the wire, with successful extraction and complete removal of the retained PD stent ([Fig. 1], [Video 1]). One 5 Fr × 12 cm, single-pigtail, plastic stent was placed into the ventral PD to prevent post-ERCP pancreatitis. The patient was discharged home the same day. At post-ERCP follow-up, the patient remained pain free and had normal liver chemistry.
Fig. 1 Endoscopic retrograde cholangiopancreatography. a Unintentional proximal migration of a pancreatic duct (PD) stent in a 64-year-old female patient. Here, the PD is being dilated with a 4-mm hurricane balloon. b A pediatric biopsy forceps is seen grasping the migrated PD stent, with successful retrieval.
Video 1 Extraction of an imbedded pancreatic duct stent with a pediatric biopsy forceps after balloon dilation.
The removal of proximally migrated PD stents remains technically challenging owing to the small diameter, bending course, and often stricturing of the PD. Many devices have been successfully used for endoscopic removal of migrated stents, including a basket, snare, extraction balloon, and grasping forceps. Despite the lack of a standardized approach to migrated pancreatic stents, ERCP should be attempted at an experienced center for retrieval of a proximally migrated PD stent prior to considering surgical intervention [1].
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