Utilidad de la medición del timo fetal en el diagnóstico de anomalías congénitas y enfermedades obstétricas

Lorna Gonzalez Herrera, Manuela Herrera Martínez, Kenia Estrada López, Vicente Hernández Moreno, Liset Ley Vega, Henry José Oliva Brett

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Resumen

Introducción: el interés de la visualización sonográfica del timo fetal está relacionado con su importante función inmunológica, las posibilidades de diagnóstico que ofrecen los ecógrafos de alta resolución, y el incremento de informes de posibles afecciones durante el proceso de la gestación.
Objetivo:
determinar la frecuencia de la hipoplasia tímica fetal en gestantes de riesgo genético y relacionarla con la presencia de defectos fetales, factores de riesgo previos y aparición de efectos obstétricos adversos.
Métodos:
se realizó un estudio descriptivo prospectivo consistente en la evaluación ecográfica del timo fetal mediante el índice timo-tórax a 221 gestantes que acudieron a los servicios de referencia del Centro Provincial de Genética Médica, por presentar riesgo genético incrementado para cardiopatías.
Resultados:
se encontraron 16 fetos con un índice timo-tórax inferior o igual a 0,30, el cual se utilizó como criterio de hipoplasia tímica en este estudio, entre ellos: 4 con cardiopatías, 4 con cromosomopatías, 1 con malformación estructural aislada, 2 con preeclampsia, 1 con crecimiento intrauterino retardado, 1 pretérmino y una muerte fetal. Los motivos de referencia con mayor proporción de positividad fueron: la traslucencia nucal aumentada y la imagen de sospecha de cardiopatía congénita en ultrasonido de pesquisaje.
Conclusiones: la determinación del índice timo-tórax permitió el diagnóstico de la hipoplasia tímica, tanto en el segundo como en el tercer trimestre de la gestación. Este tipo de investigación es relevante pues contribuye a identificar: defectos congénitos, factores de riesgo y efectos obstétricos adversos.

Palabras clave

timo/diagnóstico por imagen; cardiopatías congénitas/diagnóstico por imagen


Creative Commons License
Este artículo está licenciado bajo la licencia Creative Commons Reconocimiento-NoComercial 4.0 Internacional .
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