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Percutaneous stent placement for the treatment of malignant biliary obstruction: nitinol versus elgiloy stents.
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.
Afiliación
  • Zurstrassen CE; Head of the Department of Interventional Radiology, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
  • Bitencourt AGV; Staff Physician in the Department of Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
  • Guimaraes MD; Staff Physician in the Department of Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Assistant Professor of Radiology, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, PE, Brazil.
  • Cavalcante ACBS; Staff Physician in the Department of Interventional Radiology, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
  • Tyng CJ; Staff Physician in the Department of Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
  • Amoedo MK; Staff Physician in the Department of Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
  • Matsushita Junior JPK; Staff Physician in the Department of Interventional Radiology, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
  • Szklaruk J; Professor of Radiology, Department of Diagnostic Radiology, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
  • Marchiori E; Full Professor of Radiology, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.
  • Chojniak R; Head of the Department of Imaging, A.C.Camargo Cancer Center, São Paulo, SP, Brazil.
Radiol Bras ; 50(2): 97-102, 2017.
Article en En | MEDLINE | ID: mdl-28428652
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

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.
Palabras clave

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Radiol Bras Año: 2017 Tipo del documento: Article País de afiliación: Brasil

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Radiol Bras Año: 2017 Tipo del documento: Article País de afiliación: Brasil