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Endoscopic bilateral metallic stenting for malignant hilar obstruction using newly designed stents

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Journal of Hepato-Biliary-Pancreatic Sciences

Abstract

Background/Purpose

Whether unilateral or bilateral drainage should be performed for malignant hilar biliary obstruction is controversial. Moreover, endoscopic placement of bilateral metallic stents is difficult and complicated.

Methods

New metallic stents, such as the Niti-S Y-type stent (Y-stent), BONASTENT M-Hilar, and Niti-S large cell D-type stent (LCD), have recently been developed for bilateral stent-in-stent procedures to facilitate contralateral stent deployment through the interstices of the first metallic stent. We review the features and efficacy of these metallic stents designed for bilateral drainage in patients with hilar biliary obstruction.

Results

The newly designed stents examined exhibited high technical success rates, low stent-related complications, and good stent patency. Endoscopic reinterventions for occluded stents could be performed easily, particularly in patients with bilateral LCD placement.

Conclusion

Endoscopic bilateral stenting using newly designed metallic stents is feasible, safe, and effective in patients with unresectable malignant hilar biliary obstruction.

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Abbreviations

SEMS:

Self-expandable metallic stent

LCD:

Niti-S large cell D-type stent

ERCP:

Endoscopic retrograde cholangiopancreatography

AF:

Axial force

RF:

Radial force

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Authors and Affiliations

  1. Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan

    Hirofumi Kogure, Hiroyuki Isayama, Kazumichi Kawakubo, Takashi Sasaki, Natsuyo Yamamoto, Kenji Hirano, Naoki Sasahira, Takeshi Tsujino, Minoru Tada & Kazuhiko Koike

Authors
  1. Hirofumi Kogure
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  2. Hiroyuki Isayama
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  3. Kazumichi Kawakubo
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  4. Takashi Sasaki
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  5. Natsuyo Yamamoto
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  6. Kenji Hirano
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  7. Naoki Sasahira
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  8. Takeshi Tsujino
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  9. Minoru Tada
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  10. Kazuhiko Koike
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Corresponding author

Correspondence to Hirofumi Kogure.

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Kogure, H., Isayama, H., Kawakubo, K. et al. Endoscopic bilateral metallic stenting for malignant hilar obstruction using newly designed stents. J Hepatobiliary Pancreat Sci 18, 653–657 (2011). https://doi.org/10.1007/s00534-011-0407-4

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  • DOI: https://doi.org/10.1007/s00534-011-0407-4

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