Covered self-expanding transhepatic biliary stents: clinical pilot study

Cardiovasc Intervent Radiol. Jan-Feb 1996;19(1):10-4. doi: 10.1007/BF02560140.


Purpose: We report our preliminary results with a new type of self-expanding covered stent for treatment of malignant biliary obstruction.

Methods: Wallstents, fully covered with high elasticity polyurethane, with an unconstrained diameter of 10 mm and a total length of 69 mm, were placed transhepatically under fluoroscopic guidance in five patients. The length of the biliary obstruction varied between 30-50 mm. At 1 and 3 months (82-98 days) clinical assessment, serum bilirubin measurement, and ultrasound examination of the biliary tree were performed.

Results: Initial uncomplicated deployment of the stents and internal drainage was possible in all patients. Distal stent migration resulted in early biliary reobstruction in one patient. At 3-month follow-up, partial reobstruction, most probably due to sludge formation, was found in another patient.

Conclusion: Our initial results indicate that the covered, self-expanding Wallstent endoprosthesis can be reliably and safely deployed transhepatically for malignant biliary obstruction.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Bile Duct Neoplasms / diagnostic imaging
  • Bile Duct Neoplasms / secondary
  • Bile Duct Neoplasms / therapy*
  • Cholangiography
  • Cholestasis, Extrahepatic / diagnostic imaging
  • Cholestasis, Extrahepatic / therapy*
  • Cholestasis, Intrahepatic / diagnostic imaging
  • Cholestasis, Intrahepatic / therapy*
  • Elasticity
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Middle Aged
  • Polyurethanes
  • Prosthesis Design
  • Recurrence
  • Stents*


  • Polyurethanes