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Sacos linfáticos yugulares dilatados fetales en el ultrasonido del primer trimestre y sus implicaciones en el cribado
Fetal diagnosis and therapy
|August 28, 2025
Resumen
Los sacos linfáticos yugulares dilatados (SJL) en el primer trimestre a menudo indican malformaciones genéticas o fetales. El grosor de la translucidez nucal (NT) es el predictor más fuerte, pero el JLS aislado puede tener resultados normales.
Área de la Ciencia:
- Diagnóstico prenatal
- Medicina para el feto
- La genética
Sus antecedentes:
- Los sacos linfáticos yugulares dilatados (JLS) en el primer trimestre son un indicador potencial de anomalías fetales.
- Comprender la asociación entre JLS, translucidez nucal (NT) y resultados adversos es crucial para el asesoramiento prenatal.
Objetivo del estudio:
- Para evaluar la importancia clínica del JLS dilatado en el primer trimestre.
- Determinar las tasas de anomalías genéticas y de malformaciones fetales en los fetos con SJL dilatado.
- Evaluar el impacto del grosor de la translucidez nucal (NT) en estos resultados.
Principales métodos:
- Estudio de cohorte multicéntrico retrospectivo.
- Inclución de fetos con JLS dilatado identificado durante las exploraciones del primer trimestre.
- Recopilación de datos sobre el grosor del tejido neural, evaluación genética y malformaciones fetales.
- Análisis de regresión logística para evaluar el valor predictivo de NT.
Principales resultados:
- Se analizaron ochenta y cuatro fetos con JLS dilatado.
- El JLS dilatado se asoció con un aumento de NT en el 89,3%, con malformaciones en el 45,2% y con anomalías genéticas en el 64,5%.
- El aumento del grosor de la NT fue el predictor más fuerte de anomalías genéticas o estructurales (OR 1,567).
- Las tasas de nacimientos vivos fueron significativamente más bajas para los fetos con NT > 99o percentil (p < 0,001).
Conclusiones:
- El JLS dilatado en el primer trimestre se correlaciona fuertemente con trastornos genéticos y malformaciones fetales.
- El grosor de la translucidez nucal (NT) es el factor predictivo más significativo para los resultados adversos.
- El JLS aislado con NT normal puede ser transitorio, pero aproximadamente un tercio aún enfrenta un mayor riesgo.
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