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Expandable metallic biliary stents

K M Chu1, E C Lai

  • 1Department of Surgery, University of Hong Kong, Queen Mary Hospital.

The Australian and New Zealand Journal of Surgery
|December 1, 1994
PubMed
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Expandable metallic biliary stents effectively treated malignant biliary strictures, with successful bile drainage in all patients. Distal obstructions showed better stent patency than hilar obstructions.

Area of Science:

  • Gastroenterology
  • Interventional Radiology
  • Oncology

Background:

  • Biliary strictures, particularly malignant ones, pose significant treatment challenges.
  • Expandable metallic stents offer a minimally invasive option for palliation and treatment.

Purpose of the Study:

  • To evaluate the efficacy and safety of expandable metallic biliary stents in patients with malignant and benign biliary strictures.
  • To compare stent performance in distal versus hilar obstructions.

Main Methods:

  • Eighteen patients received either Gianturco-Rosch Z-stents or Wallstents via endoscopic, percutaneous, or combined routes.
  • Implantation success, bile drainage, stent occlusion, migration, and patency were assessed.
  • Follow-up included clinical assessment for jaundice and stent patency duration.

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Main Results:

  • Successful stent implantation and bile drainage in all 18 patients.
  • No stent migration occurred; four occlusions were managed successfully.
  • Median patency was 288.5 days for distal and 61.5 days for hilar obstructions, with an overall median of 165 days.

Conclusions:

  • Expandable metallic biliary stents are a useful adjunct for malignant biliary obstructions.
  • Stent patency is significantly better for distal biliary obstructions compared to hilar obstructions.