CardioVascular and Interventional Radiology

, Volume 39, Issue 4, pp 582–590 | Cite as

Malignant Hilar Biliary Obstruction: Treatment by Means of Placement of a Newly Designed Y-Shaped Branched Covered Stent

  • Jong Hyouk Yun
  • Gyoo-Sik JungEmail author
  • Jung Gu Park
  • Byung Chul Kang
  • Dong-Hoon Shin
  • Byung Chul Yun
  • Sang Uk Lee
Clinical Investigation



To evaluate the technical feasibility and clinical efficacy of placement of a newly designed Y-shaped branched covered stent for palliative treatment of malignant hilar biliary obstruction.


From June 2011 to September 2014, 34 consecutive patients with malignant hilar biliary obstruction underwent percutaneous placement of a Y-shaped branched covered stent for palliative treatment. Technical and clinical success, complications, cumulative patient survival, and stent patency were evaluated.


Stent placement was technically successful in all patients. All patients showed adequate biliary drainage on the follow-up cholangiogram. Mean serum bilirubin level (10.9 mg/dl) decreased significantly 1 week (5.7 mg/dl) and 1 month (2.6 mg/dl) after stent placement (p < 0.01). Complications associated with the procedure included hemobilia (n = 3) and biloma (n = 1). During the mean follow-up period of 225 (range 12–820) days, nine patients (26.5 %) developed stent occlusion caused by tumor overgrowth (n = 8) and sludge (n = 1). Two of them underwent coaxial placement of a second stent with good results. The median survival time was 281 days and median primary stent patency was 337 days. There were no significant differences in the patient survival and stent patency rates in relation to age, sex, or Bismuth type.


Percutaneous placement of the Y-shaped branched covered stent seems to be technically feasible and clinically effective for palliative treatment of malignant hilar biliary obstruction.


Bile duct neoplasms Biliary obstruction Malignancy Stents and prostheses 



We would like to acknowledge So Hee Jung, PhD, for her assistance in preparing the manuscript.

Compliance with Ethical Standards

Conflict of interest

Jong Hyouk Yun, Gyoo-Sik Jung, Jung Gu Park, Byung Chul Kang, Dong-Hoon Shin, Byung Chul Yun, and Sang Uk Lee declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media New York and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) 2015

Authors and Affiliations

  • Jong Hyouk Yun
    • 1
  • Gyoo-Sik Jung
    • 1
    Email author
  • Jung Gu Park
    • 1
  • Byung Chul Kang
    • 2
  • Dong-Hoon Shin
    • 3
  • Byung Chul Yun
    • 4
  • Sang Uk Lee
    • 4
  1. 1.Departments of Diagnostic RadiologyKosin University College of MedicineBusanKorea
  2. 2.Departments of Radiology, Mokdong HospitalEwha Womans University College of MedicineSeoulKorea
  3. 3.Departments of General SurgeryKosin University College of MedicineBusanKorea
  4. 4.Departments of Internal MedicineKosin University College of MedicineBusanKorea

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