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Percutaneous stent placement for the treatment of malignant biliary obstruction: nitinol versus elgiloy stents / Tratamento percutâneo de obstrução biliar maligna: comparação entre os stents nitinol e elgiloy
Zurstrassen, Charles Edouard; Bitencourt, Almir Galvão Vieira; Guimaraes, Marcos Duarte; Cavalcante, Aline Cristine Barbosa Santos; Tyng, Chiang Jeng; Amoedo, Mauricio Kauark; Matsushita Junior, João Paulo Kawaoka; Szklaruk, Janio; Marchiori, Edson; Chojniak, Rubens.
  • Zurstrassen, Charles Edouard; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Bitencourt, Almir Galvão Vieira; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Guimaraes, Marcos Duarte; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Cavalcante, Aline Cristine Barbosa Santos; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Tyng, Chiang Jeng; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Amoedo, Mauricio Kauark; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Matsushita Junior, João Paulo Kawaoka; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Szklaruk, Janio; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Marchiori, Edson; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
  • Chojniak, Rubens; A.C.Camargo Cancer Center. Department of Interventional Radiology. São Paulo. BR
Radiol. bras ; 50(2): 97-102, Mar.-Apr. 2017. tab, graf
Article in English | LILACS | ID: biblio-842463
ABSTRACT
Abstract

Objective:

This study aimed to compare two self-expanding stents, a nitinol stent and an elgiloy stent, both placed percutaneously, in terms of their efficacy in palliating inoperable malignant biliary obstruction. Materials and

Methods:

We retrospectively investigated 99 patients with unresectable malignant biliary obstruction treated with percutaneous placement of a self-expanding metallic stent at our institution between May 2007 and January 2010. Serum bilirubin and liver enzyme levels were measured before and 30 days after stenting. For all procedures using elgiloy or nitinol stents, stent occlusion and patient survival rates were calculated using Kaplan-Meyer analysis.

Results:

All of the patients showed clinical improvement after stent placement, with no difference between the two groups. In both groups, the occlusion-free survival rate was 67% at 30 days, 37% at 90 days, 25% at 180 days, and 10% at 360 days, with no significant difference in relation to the type of stent.

Conclusion:

The two stents evaluated showed comparable efficacy for the percutaneous treatment of unresectable biliary malignancy, with good clinical results.
RESUMO
Resumo

Objetivo:

Este estudo procurou comparar a eficácia do implante percutâneo do stent autoexpansível de nitinol versus o stent de elgiloy para paliação da obstrução biliar maligna irressecável.

Materiais e Métodos:

Nós investigamos, retrospectivamente, 99 pacientes com obstrução maligna irressecável tratada com implante percutâneo de stent metálico autoexpansível em nossa instituição, de março de 2007 até janeiro de 2010. Os níveis séricos de bilirrubina e enzimas hepáticas foram medidos antes e 30 dias após o implante do stent. Para os procedimentos em que foi utilizado o stent de elgiloy ou o stent de nitinol, as taxas de oclusão dos stents e as taxas de sobrevida dos pacientes foram calculadas pela análise de Kaplan-Meyer.

Resultados:

Os pacientes mostraram melhora clínica após o implante dos stents, sem diferença entre os dois grupos. As taxas de sobrevida livre de oclusão foram 67% aos 30 dias, 37% aos 90 dias, 25% aos 180 dias e 10% aos 360 dias para ambos os grupos, sem diferença significativa em relação ao tipo de stent.

Conclusão:

Os dois stents mostraram eficácias comparáveis no tratamento da doença biliar maligna irressecável, com bons resultados clínicos.


Full text: Available Index: LILACS (Americas) Language: English Journal: Radiol. bras Journal subject: Diagnostic Imaging / Radiology Year: 2017 Type: Article Affiliation country: Brazil Institution/Affiliation country: A.C.Camargo Cancer Center/BR

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Full text: Available Index: LILACS (Americas) Language: English Journal: Radiol. bras Journal subject: Diagnostic Imaging / Radiology Year: 2017 Type: Article Affiliation country: Brazil Institution/Affiliation country: A.C.Camargo Cancer Center/BR