Patrones de recaída y respuesta patológica según tipo subrogado en pacientes con cáncer de mama y axila negativa al inicio tratadas con quimioterapia neoadyuvante
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Fuertes García, Silvia
González Cortijo, Lucía
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Abstract
Objetivos
Determinar los patrones de recaída y la respuesta patológica en relación con los diferentes tipos subrogados de cáncer de mama tras tratamiento neoadyuvante para analizar supervivencia y optimizar la vigilancia.
Material y métodos
Análisis retrospectivo de 112 pacientes con 116 tumores, con axila clínicamente negativa, tratados con quimioterapia neoadyuvante en nuestro Centro entre 2008 y 2014, y operadas posteriormente con cirugía conservadora o radical. Analizamos respuesta patológica en función de los tipos subrogados, tasas de recurrencia y sus patrones, supervivencia libre de enfermedad (SLE) y supervivencia global (SG).
Resultados
Se logró una respuesta patológica completa (RPC) en el 52,6%, constatando que estas pacientes tenían mejor supervivencia (p< 0,05). En cuanto a los tipos subrogados, observamos RPC en el 85% de los tumores Her-2/neu positivos puros, el 65,6% de los triple negativos, el 43,8% de Luminal B Her-2 positivo, el 40% de Luminal B Her-2 negativo y en el 25% de Luminal A (p< 0,05). Con un tiempo medio de seguimiento de 53 meses encontramos una tasa de recaídas del 9%. Los tipos menos agresivos tenían un tiempo a recaída loco-regional de 38,5 meses y a recurrencia sistémica de 74 meses. Los tipos más agresivos mostraron un tiempo medio a recaída loco- regional de 36,2 meses y a recurrencia sistémica de 8 meses.
Conclusiones
La quimioterapia neoadyuvante adaptada al tipo subrogado es una estrategia válida para intentar alcanzar una RPC. Las diferencias observadas en el patrón de recurrencia permiten optimizar el seguimiento.
Purpose To determine relapse patterns and pathological response in relation to surrogate types of breast cancer after neoadjuvant treatment to analyse survival and optimize surveillance. Material and methods Retrospective analysis of 112 patients with 116 tumours, with negative axillary involvement, treated with neoadjuvant chemotherapy at our hospital, between 2008 and 2014, who systematically underwent surgery. We analysed pathological response according to surrogate subtypes, rates and patterns of recurrence, disease free survival (DFS) and overall survival (OS). Results Pathological complete response (pCR) was achieved in 52.6%, finding that these patients had better survival (p< .05). Looking at surrogate subtypes, we observed a pCR in 85% of pure Her-2/neu positive tumours, 65.6% of triple negatives, 43.8% of Her -2 positive Luminal B, 40% of Luminal B and 25% of Luminal A (p< .05). With a median follow-up of 53 months, we found a 9% rate of relapses. The less aggressive types had a median loco-regional relapse time of 38.5 months and a systemic recurrence time of 74 months. The more aggressive types showed a loco-regional relapse time of 36.2 months and systemic recurrence time of 8 months. Conclusions Neoadjuvant chemotherapy according to surrogate type is a useful strategy to attempt pCR. Loco-regional relapse and systemic recurrence patterns allow surveillance adjustments.
Purpose To determine relapse patterns and pathological response in relation to surrogate types of breast cancer after neoadjuvant treatment to analyse survival and optimize surveillance. Material and methods Retrospective analysis of 112 patients with 116 tumours, with negative axillary involvement, treated with neoadjuvant chemotherapy at our hospital, between 2008 and 2014, who systematically underwent surgery. We analysed pathological response according to surrogate subtypes, rates and patterns of recurrence, disease free survival (DFS) and overall survival (OS). Results Pathological complete response (pCR) was achieved in 52.6%, finding that these patients had better survival (p< .05). Looking at surrogate subtypes, we observed a pCR in 85% of pure Her-2/neu positive tumours, 65.6% of triple negatives, 43.8% of Her -2 positive Luminal B, 40% of Luminal B and 25% of Luminal A (p< .05). With a median follow-up of 53 months, we found a 9% rate of relapses. The less aggressive types had a median loco-regional relapse time of 38.5 months and a systemic recurrence time of 74 months. The more aggressive types showed a loco-regional relapse time of 36.2 months and systemic recurrence time of 8 months. Conclusions Neoadjuvant chemotherapy according to surrogate type is a useful strategy to attempt pCR. Loco-regional relapse and systemic recurrence patterns allow surveillance adjustments.
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Hernández-Cortés, G., Rubio, M., Fuertes, S., Martínez, V., González-Cortijo, L., Díaz, A., Murillo, R., Mohedano, R., Vera, U., y Sainz de la Cuesta, R. (2020). Patrones de recaída y respuesta patológica según tipo subrogado en pacientes con cáncer de mama y axila negativa al inicio tratadas con quimioterapia neoadyuvante. Clínica e Investigación en Ginecología y Obstetricia, 48(4), 100676. https://doi.org/10.1016/j.gine.2021.100676







