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Endoscopy 2001; 33(9): 786-790
DOI: 10.1055/s-2001-16519
Original Article
© Georg Thieme Verlag Stuttgart · New York

Why Do Bilioduodenal Plastic Stents Become Occluded? A Clinical and Pathological Investigation on 100 Consecutive Patients

U. Weickert 1, 2 , T. Venzke 3 , J. König 4 , J. Janssen 1 , K. Remberger 3 , L. Greiner 1
  • 1 Dept. of Medicine II (Gastroenterology), Wuppertal Clinical Center, University of Witten/Herdecke, Germany
  • 2 Dept. of Medicine II, Offenbach Municipal Hospital, J. W. Goethe University, Frankfurt am Main, Germany
  • 3 Dept. of Pathology, University of Saarland, Homburg/Saar, Germany
  • 4 Dept. of Medical Biometrics, Epidemiology, and Informatics, University of Saarland, Homburg/Saar, Germany
Further Information

Publication History

Publication Date:
20 August 2001 (online)

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Background and Study Aims: The main complication associated with biliary stenting is stent occlusion. This study tested the hypothesis that bilioduodenal reflux may play a crucial role in stent clogging.

Patients and Methods: Plastic stents in 100 consecutive patients with various biliary disorders were investigated macroscopically and cytologically.

Results: In 37 patients with elective stent extraction, the only risk factor for stent occlusion was the duration of stenting. Plant material was found as a consequence of duodenobiliary reflux in 38 of the 89 stents with any stent content. In patients who had two stents, the stent content was identical in eight of 14 cases.

Conclusions: In addition to other mechanisms of biliary stent occlusion, duodenobiliary reflux appears to play an important role. A stent design capable of at least partly preventing this type of reflux might be of clinical benefit.

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U. Weickert, M.D. 

Dept. of Medicine II
Offenbach Municipal Hospital
J. W. Goethe University
Frankfurt am Main

Starkenburgring 66
63069 Offenbach, Germany


Fax: + 49-069-84054471

Email: uwe.weickert@cityweb.de