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Related Experiment Video

Updated: Nov 18, 2025

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Biliary stent migration: why, how, and what?

Mohamed H Emara1, Mohammed Hussien Ahmed1, Ahmed S Mohammed2

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European Journal of Gastroenterology & Hepatology
|February 9, 2021
PubMed
Summary

Biliary stent migration occurred in 8.4% of patients, often due to common bile duct dilation and prolonged stent duration. Migrated stents were successfully retrieved endoscopically, with cholangitis being the most frequent complication.

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Area of Science:

  • Gastroenterology
  • Endoscopic procedures
  • Biliary interventions

Background:

  • Biliary stent migration is a known complication with variable reported frequencies and risk factors.
  • Understanding migration patterns and retrieval techniques is crucial for patient management.

Purpose of the Study:

  • To determine the frequency of biliary stent migration.
  • To identify risk factors contributing to stent migration.
  • To analyze complications and endoscopic retrieval methods for migrated biliary stents.

Main Methods:

  • Retrospective analysis of 876 patients undergoing biliary stenting.
  • Comparison of patients with and without migrated stents.
  • Review of endoscopic retrieval techniques for migrated stents.

Main Results:

  • Biliary stent migration occurred in 8.4% of patients (74/876).
  • Independent predictors included common bile duct dilation, complete sphincterotomy, balloon dilation, and prolonged stent duration (>1 month).
  • Cholangitis (24.3%) was the most common adverse event; distal migration led to duodenal injury in two cases and perforation in two others. All stents were retrieved endoscopically.

Conclusions:

  • Biliary stent migration occurs at a significant rate (8.4%) and is associated with specific procedural and anatomical factors.
  • Endoscopic retrieval is an effective method for managing migrated biliary stents.
  • Identifying risk factors can help minimize migration events.