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Vol. 59. Issue 3.
Pages 226-231 (May - June 2017)
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Vol. 59. Issue 3.
Pages 226-231 (May - June 2017)
Original Report
Value of brain MRI when sonography raises suspicion of agenesis of the corpus callosum in fetuses
Valor de la resonancia magnética cerebral en fetos con sospecha ecográfica de agenesia del cuerpo calloso
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A. Jarre, R. Llorens Salvador
Corresponding author
llorens_rob@gva.es

Corresponding author.
, G. Montoliu Fornas, A. Montoya Filardi
Sección de Imagen Pediátrica, Área Clínica de Imagen Médica, Hospital Universitario y Politécnico La Fe, Valencia, Spain
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Table 1. Associated intracranial anomalies in fetuses with a diagnosis of agenesis of corpus callosum through fetal MRI. Notice that some fetuses showed several associated anomalies.
Abstract
Objective

To evaluate the role of magnetic resonance imaging (MRI) in fetuses with a previous sonographic suspicion of agenesis of the corpus callosum (ACC) to confirm the diagnosis and to detect associated intracranial anomalies.

Material and methods

Single-center retrospective and descriptive observational study of the brain MRI performed in 78 fetuses with ACC sonographic suspicion between January 2006 and December 2015. Two experts in fetal imaging reviewed the MRI findings to evaluate the presence and morphology of the corpus callosum. When ACC was detected the whole fetal brain anatomy was thoroughly studied to determine the presence of associated anomalies. Prenatal MR imaging findings were compared to postnatal brain MRI or necropsy findings when available.

Results

Fetal MRI diagnosed 45 cases of ACC, 12 were partial (26.7%) and 33 complete (73.3%). In 28 cases (62.2%) associated intracranial anomalies were identified. The most often abnormality was ventriculomegaly (78.6%), followed by cortical malformations (53.6%), posterior fossa (25%) and midline anomalies (10.7%).

Conclusion

Fetal brain MRI has an important role in the diagnosis of ACC and detection of associated anomalies. To perform a fetal brain MRI is important in fetuses with sonographic suspicion of ACC.

Keywords:
Prenatal diagnosis
Fetal ultrasound
Fetal magnetic resonance imaging
Agenesis of corpus callosum
Resumen
Objetivo

Valorar el papel de la resonancia magnética (RM) en los fetos con sospecha ecográfica de agenesia del cuerpo calloso (ACC) para confirmar el diagnóstico y detectar anomalías intracraneales asociadas.

Material y métodos

Estudio observacional descriptivo y retrospectivo de las RM cerebrales realizadas a 78 fetos remitidos a nuestro centro entre enero de 2006 y diciembre de 2015 por sospecha de ACC. Dos especialistas en diagnóstico por imagen fetal revisaron las exploraciones para evaluar la presencia y la morfología del cuerpo calloso. En los casos de ACC se valoró el resto de la neuroanatomía fetal para determinar la presencia de anomalías asociadas. Se correlacionaron los hallazgos de imagen prenatales con la RM posnatal o con la necropsia, cuando estuvieron disponibles.

Resultados

La RM diagnosticó de ACC 45 casos, de los que 12 fueron de tipo parcial (26,7%) y 33 completa (73,3%). Se detectaron anomalías asociadas en 28 casos (62,2%), siendo la más frecuente la ventriculomegalia (78,6%), seguida de las malformaciones corticales (53,6%) y las anomalías de la fosa posterior (25%) y de la línea media (10,7%).

Conclusión

La RM fetal facilita el diagnóstico de la ACC y la detección de anomalías asociadas. Su realización es importante ante la sospecha ecográfica prenatal de ACC.

Palabras clave:
Diagnóstico prenatal
Ecografía fetal
Resonancia magnética fetal
Agenesia de cuerpo calloso

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