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  • Title: Patency of side branches after peripheral placement of metallic biliary endoprostheses.
    Author: Nicholson DA, Chetty N, Jackson JE, Roddie ME, Adam A.
    Journal: J Vasc Interv Radiol; 1992 Feb; 3(1):127-30. PubMed ID: 1311615.
    Abstract:
    During a 28-month period, the authors placed 91 Wallstent endoprostheses in 55 patients with malignant obstructive jaundice. Five patients developed recurrent jaundice between 2 and 60 weeks after stent insertion due to stent occlusion by tumor overgrowth on seven occasions. To assess long-term segmental side-branch drainage through the walls of such endoprostheses, the cholangiograms obtained following stent occlusion were reviewed. In all five patients, evidence of drainage of intrahepatic ducts through the side of the mesh was observed. Although the number of patients in the series is small, this initial experience suggests that long metallic endoprostheses can be placed peripherally in the intrahepatic bile ducts without the potential risk of infection or occlusion of undrained, noninvolved segments. This policy may delay or prevent endoprosthesis occlusion in many patients.
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