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Radioterapia de rescate después de la crioterapia en el cáncer de próstata
F León1,2, S Moreno-López3, J Mases1
1Department of Radiation Oncology, Hospital Clínic of Barcelona, Barcelona, Spain.
Resumen
La radioterapia de rescate después de la crioterapia para el cáncer de próstata ofrece un control duradero. La hipofraccionamiento parece seguro y eficaz, sin aumento de la toxicidad observada en este estudio.
Área de la Ciencia:
- Oncología Oncología.
- Radioncología Oncología de la radiación.
- Urología Urología Urología.
Sus antecedentes:
- La crioterapia (CT) es un tratamiento primario emergente para el cáncer de próstata (PC).
- Existen recomendaciones de guía limitadas para el uso de TC.
- La radioterapia de salvamento (SRT) es una opción para la recurrencia de PC después de la TC.
Objetivo del estudio:
- Evaluar la toxicidad, el control local, el control bioquímico y los resultados de supervivencia de sRT después de CT para PC recurrente.
- Evaluar el impacto de la hipofraccionamiento en la toxicidad y los resultados.
Principales métodos:
- Análisis retrospectivo de 21 pacientes con PC recurrente después de la TC tratados con sRT (2013-2023).
- Toxicidad evaluada utilizando la escala RTOG; toxicidad relacionada con la fraccionamiento comparada a través de la prueba chi-cuadrado.
- Recidiva bioquímica definida por los criterios de Phoenix; supervivencia y control local analizados mediante métodos Kaplan-Meier.
Principales resultados:
- Mediana de seguimiento: 56 meses. Edad media: 73 años.
- La dosis promedio de sRT: 73.14 Gy; 86% recibieron terapia hormonal; 52% se sometieron a hipofraccionamiento.
- Toxicidad aguda por GU (G2): 23,8%. Toxicidad crónica por GU (G2/G3): 28,6%/9,5%.Toxicidad por GU crónica (G2/G3): 28,6%/9,5%.Toxicidad por GU crónica (G2/G3): 28,6%/9,5%. Toxicidad GI: <5%. No hay diferencia significativa en la toxicidad entre la hipofraccionamiento convencional y la hipofraccionamiento.
- La mediana de la OS: 108,45 meses. El promedio de OS: 98 meses. El control local fue del 90,4%.
Conclusiones:
- sRT después de la TC puede lograr un control local y bioquímico duradero en pacientes con cáncer de próstata seleccionados.
- La toxicidad tardía grave es posible, pero se produjo en una pequeña proporción de casos.
- La hipofraccionamiento es una opción factible para la sRT post-TC, no asociada con un aumento de la toxicidad en esta cohorte.
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