Korean Journal of Radiology

The Korean Society of Radiology (대한영상의학회)
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Percutaneous Placement of Self-expandable Metallic Biliary Stents in Malignant Extrahepatic Strictures: Indications of Transpapillary and Suprapapillary Methods

  • Deok Hee Lee (Department of Radiology, Yong-dong Severance Hospital, Yonsei University College of Medicine) ;
  • Jeong-Sik Yu (Department of Radiology, Yong-dong Severance Hospital, Yonsei University College of Medicine) ;
  • Jae Cheol Hwang (Department of Diagnostic Radiology, Ulsan University Hospital) ;
  • Ki Hwang Kim (Department of Radiology, Yong-dong Severance Hospital, Yonsei University College of Medicine)
  • Received : 2000.05.04
  • Accepted : 2000.06.14
  • Published : 2000.06.30
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Abstract

Objective: To compare the efficacy of suprapapillary and transpapillary methods of transhepatic biliary metallic stent placement in malignant biliary strictures and to specify the indications of each method applied. Materials and Methods: Stents were placed in 59 patients. Strictures were categorized as type A (within 3 cm of the ampulla, n = 27), type B (over 3 cm from ampulla, n = 7), type C (within 3 cm of the bending portion, n = 9), or type D (over 3 cm above the bending portion, n=16). The stenting method was suprapapillary in 34 cases and transpapillary in 25. The rates of initial and long-term patency and of early recurrence were compared. Results: Initial patency rates for the suprapapillary and transpapillary methods were 1/7 (14.3%) and 20/20 (100%) respectively for type A (p < 0.0001), 4/5 (80.0%) and 2/2 for type B, 3/7 (42.9%) and 2/2 for type C, and 15/16 (93.8%) and 0/0 for type D. Early recurrence rates were 7/30 (23.3%) using the suprapapillary method and 4/29 (13.8%) using the transpapillary method (p = 0.51). The long-term patency rate did not differ significantly according to either type (p = 0.37) or method (p = 0.62). Conclusion: For good initial patency, the transpapillary method is recommended for strictures of the distal extrahepatic duct near the ampulla and just above the bending portion. Long-term patency is not influenced by the stenting method employed.

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References

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