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Placement of a newly designed partially covered T- or Y-configured self-expanding metallic stent for hilar biliary obstruction: technical note

  • VASCULAR AND INTERVENTIONAL RADIOLOGY
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Abstract

Purpose

To investigate the technical success, efficacy, and safety of a newly designed partially covered bilateral self-expanding metallic stent (SEMS) in patients with malignant biliary obstruction.

Material and methods

From May 2016 to November 2017, ten patients with malignant hilar biliary stenosis (bismuth type II–IV) underwent stent placement with the newly designed partially covered T/Y-configured SEMS. Technical success, drainage catheter removal, jaundice remission, early and late complications, stent patency, and overall survival were analyzed.

Results

The stent was successfully deployed in all patients. The total bilirubin level significantly decreased one month after stent placement (P < 0.05). Drainage catheter removal rate was 90%. Two cases (20%) experienced early complications (bile duct hemorrhage and cholangitis) and two cases (20%) experienced late complications (hepatic abscess and cholangitis). During the follow-up (mean 276 days; range 57–503 days) stent occlusion occurred in three patients (30%), and two patents died of hepatic failure. The median stent patency and overall survival were 275 days (95% CI 223.8–326.3 days) and 428.9 days (95% CI 347.9–509.8 days), respectively.

Conclusion

The newly designed partially covered T/Y-configured SEMS is technically feasible and clinically effective for biliary trifurcation obstruction.

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Acknowledgements

This research was supported by Key Scientific Research Projects of Higher Education Institutions in Henan Province (20A320024).

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Correspondence to Xinwei Han.

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The authors declare that they have no conflict of interest.

Ethical approval

This prospective study was approved by the institutional review board of the First Affiliated Hospital of Zhengzhou University.

Ethical standards

All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional and/or National Research Committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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Jiao, D., Wang, J., Han, B. et al. Placement of a newly designed partially covered T- or Y-configured self-expanding metallic stent for hilar biliary obstruction: technical note. Radiol med 125, 999–1007 (2020). https://doi.org/10.1007/s11547-020-01196-w

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  • DOI: https://doi.org/10.1007/s11547-020-01196-w

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