J Korean Soc Radiol.  2013 Apr;68(4):297-303. 10.3348/jksr.2013.68.4.297.

A Comparison of Y-Type and T-Type Metallic Bilateral Biliary Stents in Patients with Malignant Hilar Biliary Obstruction

Affiliations
  • 1Department of Radiology, Chonbuk National University Hospital and Medical School, Jeonju, Korea. ymhan@jbnu.ac.kr
  • 2Institute of Medical Science, Chonbuk National University Hospital and Medical School, Jeonju, Korea.
  • 3Institute of Cardiovascular Research, Chonbuk National University Hospital and Medical School, Jeonju, Korea.
  • 4Department of Preventive Medicine, Chonbuk National University Hospital and Medical School, Jeonju, Korea.

Abstract

PURPOSE
To compare the Y type (side-by-side) and T type (stent-in-stent) bilateral biliary metal stenting in malignant hilar obstruction in terms of treatment outcomes, including post-stenting serum bilirubin level and stent patency.
MATERIALS AND METHODS
41 consecutive patients with advanced hilar malignancies who underwent percutaneous placement of bilateral metallic stents - Y (n = 23) and T types (n = 18) - were retrospectively reviewed. We evaluated stent patency after the procedure by cholangiogram and abdominal CT. Pre- and post-stenting serum bilirubin level (total, direct bilirubin) at 1 week and at 1 month were compared. Student t-test and Kaplan-Meier method were used in the statistical analysis.
RESULTS
After comparing the median stent patency according to both types, they did not differ significantly (Y: 38 days, T: 61 days; p = 0.141). There was a more decrease in the total and direct bilirubin of the T type compared to the Y type after 1 week (p = 0.013, 0.025). However, no significant difference existed between the decreasing bilirubin rates of both types after 1 month (p = 0.923, 0.742).
CONCLUSION
In patients with malignant hilar obstruction, both Y and T type bilateral metallic biliary stents are effective methods. Stent patency and bilirubin decrease rates were not significantly different.


MeSH Terms

Bilirubin
Humans
Retrospective Studies
Stents
Bilirubin

Reference

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