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Factores pronósticos de supervivencia en pacientes con tumores del estroma gastrointestinal en adyuvancia con imatinib
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Introducción: Los tumores del estroma gastrointestinal son neoplasias raras del aparato gastrointestinal. Un número considerable de casos presenta factores de riesgos que provocan recurrencia temprana de la enfermedad, por tanto, la terapia adyuvante con imatinib en este grupo de pacientes logra aumentar el intervalo libre de enfermedad y la supervivencia global.
Objetivo: Identificar los factores pronósticos que influyen en la supervivencia de pacientes con tumores del estroma gastrointestinal en etapas localizadas en tratamiento adyuvante con imatinib.
Material y Métodos: Se realizó un estudio retrospectivo y observacional en pacientes con diagnóstico de tumores del estroma gastrointestinal atendidos en el Hospital Ameijeiras, que recibieron tratamiento adyuvante con imatinib entre 2003 y 2020. Se evaluó supervivencia por método Kaplan-Meier, y regresión de Cox, para determinar los factores pronósticos independientes de supervivencia.
Resultados: Las tasas de supervivencia libre de enfermedad a 2, 3 y 5 años fueron 84,6 %, 81,2 % y 74,5 %, respectivamente. Las tasas de supervivencia global a 2, 3 y 5 años fueron 96,6 %, 88,6 % y 81,9 %, respectivamente. La edad >60 años, localización tumoral no gástrica, mayor índice mitótico y presencia de márgenes quirúrgicos positivos constituyeron factores pronósticos independientes relacionados con una menor supervivencia.
Conclusiones: Los resultados en términos de supervivencia libre de enfermedad y supervivencia global son similares a los reportados internacionalmente.
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Referencias
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