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Optimización del vaciamiento de ganglios linfáticos pélvicos en el cáncer de vejiga: enfoque obturador, pronóstico

Jun Miki^1,2, Shoji Kimura^3,4, Fumihiko Urabe³

¹Department of Urology, The Jikei University School of Medicine, Kashiwa Hospital, 163-1 Kashiwashita, Kashiwa-Shi, Chiba, 277-0004, Japan. junmiki.jikei@gmail.com.

International journal of clinical oncology

|January 27, 2026

Resumen

La región obturadora es clave para diagnosticar metástasis de ganglios linfáticos en el cáncer de vejiga. Centrarse en esta área puede mejorar los resultados para la enfermedad pN1, ofreciendo un enfoque más específico que el vaciamiento extenso.

Área de la Ciencia:

Urología
Oncología Quirúrgica
Oncología

Sus antecedentes:

La extensión óptima del vaciamiento de ganglios linfáticos pélvicos en el cáncer de vejiga es crucial.
La subestratificación nodal y la biopsia del ganglio centinela (SLNB) están bajo investigación.
La evaluación de la omisión del vaciamiento contralateral también es una consideración clave.

Objetivo del estudio:

Determinar la extensión óptima del vaciamiento de ganglios linfáticos pélvicos para el cáncer de vejiga.
Evaluar la relevancia pronóstica de la subestratificación nodal.
Evaluar la viabilidad de la SLNB y la omisión del vaciamiento contralateral.

Principales métodos:

Análisis retrospectivo de 180 pacientes sometidos a cistectomía radical (laparoscópica/robótica).
Estudio piloto de SLNB en 30 casos.
Análisis del drenaje linfático para definir la región obturadora.
Se evaluó el impacto pronóstico utilizando modelos de Kaplan-Meier y Cox.

Principales resultados:

La SLNB mostró una tasa de detección del 63% y una tasa de falsos negativos del 1.6%.
Las metástasis de ganglios linfáticos se encontraron predominantemente en la región obturadora (87.5% pN1, 100% pN2-3).
La supervivencia específica del cáncer fue significativamente mejor para pN1 vs. pN2-3 (61 vs. 7 meses).
pN2-3 fue el factor pronóstico más fuerte para la supervivencia específica del cáncer (HR: 25.4).

Conclusiones:

La SLNB tuvo una utilidad limitada, pero la región obturadora es el objetivo óptimo para la metástasis nodal.
La región obturadora puede ser terapéutica en la enfermedad pN1, mostrando una diseminación limitada y un mejor pronóstico que pN2-3.
Esto sugiere una estrategia de vaciamiento nodal más enfocada.

Palabras clave:

cáncer de vejiga subestratificación nodal vaciamiento de ganglios linfáticos pélvicos pronóstico ganglio centinela

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