Introducción: El cáncer gástrico es de los tumores malignos más comunes en el mundo y es de alta prevalencia en Chile. La tasa de mortalidad anual es de 26/100.000 habitantes para hombres y 12/100.000 para mujeres. La cirugía es el tratamiento con mayor probabilidad de curación, prolonga la sobrevida global y libre de enfermedad. La sobrevida global a 5 años reportada a nivel mundial es cercana al 30%. No contamos con datos en la región de Valparaíso sobre la sobrevida en pacientes con cáncer gástrico. Objetivo: Caracterizar a los pacientes operados por adenocarcinoma y estimar su sobrevida a 5 años. Materiales y Método: Realizamos un estudio retrospectivo a partir de la revisión de fichas clínicas de pacientes sometidos a gastrectomía por adenocarcinoma gástrico. La variable principal analizada fue la sobrevida a 5 años. Resultados: Se incluyeron 69 pacientes, el promedio de sobrevida fue de 31,7 (DE 25,3) meses y la sobrevida fue de 46% a 5 años. Encontramos diferencia al comparar grados de compromiso ganglionar según TNM (p = 0,0001). Según estadio se obtuvo un valor P cercano a la significancia estadística (p = 0,083). Otras variables sugieren diferencia en sobrevida sin lograr significancia estadística. Discusión: Presentamos resultados similares a estudios nacionales, posicionándonos con mejores resultados que países de occidente, pero aún muy por debajo de la sobrevida reportada en Japón (> 70%). Conclusión: Logramos caracterizar acabadamente a los pacientes operados por adenocarcinoma, su sobrevida a 5 años, además de apoyar la asociación entre distintos grados de compromiso ganglionar.
Introduction: Gallbladder cancer (GBC) is one of the most important causes of cancer death in Chile. Materials and methods:A retrospective review of 103 patients with a diagnosis of GBC who were treated with surgery and adjuvant radiochemotherapy (RT-CT) was carried out at the Oncological Institute of Viña del Mar, Chile. Of these, 56 underwent surgery with oncological criteria, in which the impact of lymph node involvement and prognostic factors for survival were analysed. Results:The median follow-up was 47.5 months. The 5-year survival of the patients operated on with oncological surgery was 55%, and for those resected without oncological criteria, it was 32% (p = 0.02). Regarding the impact of lymph node involvement, 5-year overall survival (OS) in patients with compromised lymph nodes was 32% versus 68% for patients without compromised lymph nodes (p = 0.006). Five-year OS in patients without involved nodes, with 1 involved node or with>1 involved node was 68%, 44% and 12%, respectively (p = 0.0002). The N ratio was grouped in 0, <10% and ≥10%. Five-year OS was 71%, 0% and 24%, respectively (p = 0.003). There was no evidence of differences in survival with respect to the number of lymph nodes studied. Conclusion:Our data provide information regarding the importance of lymph node involvement in patients with GBC undergoing surgery with oncological criteria and adjuvant RT-CT. In the absence of randomised studies, it is suggested to have a more aggressive therapeutic approach in those patients with two or more involved nodes or with a lymph node ratio >10%.
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