Descripción de la experiencia en RM cerebral fetal en Cali - Colombia / Experience description in fetal magnetic resonance in Cali - Colombia

Resumen: Objetivo: Describir la experiencia en la implementación de resonancia magnética fetal en alteraciones del sistema nervioso en un centro de alto nivel en Cali - Colombia. Materiales y métodos: Estudio descriptivo observacional retrospectivo. Se analizaron los casos de resonancia magnética fetal (RMF) entre septiembre del 2011 y abril del 2017. Se registró y analizó la información demográfica, clínica e imagenológica disponible en los informes radiológicos e historia clínica. Resultados: Se analizaron 36 estudios de RMF cerebral, la edad promedio de las pacientes fue 29.7 ± 5.2 años, la edad gestacional promedio fue 31.8 ± 3.5 semanas. El hallazgo más frecuente fue ventriculomegalia en 47.2% de casos (n= 17), patologías adquiridas n=6 (16.7%), alteraciones del tubo neural n=5 (13.9%), y anormalidades del cuerpo calloso n=3 (8.3%). Cuatro pacientes tuvieron estudio postnatal. Conclusión: La frecuencia de anomalías cerebrales encontradas en esta revisión es congruente con lo reportado en la literatura.

Abstract: Objective: To describe the experience with the use of fetal magnetic resonance in alterations of the nervous system, in a high level center in Cali - Colombia. Methods: A retrospective observational descriptive study was made. We analyzed all cases of fetal MRI between September 2011 and April 2017. Demographic, clinical and imagenological information were reviewed. Including age, gestational age, type of gestation, study indication and imagenological fidings. Results: 36 fetal brain MRI were analyzed. The average age of cases was 29.7 ± 5.2 years-old with an average of 31.8 ± 3.5 weeks of gestation. All cases were single gestation. The most frequent result was ventriculomegaly n=17(47.2%), acquired pathologies n=6 (16.7%), neural tube anormalities n=5(13.9%), and corpus callosum anomalies n=3(8.3%). Conclusions: The frequencies of fetal cerebral anomalies found in this study were congruent with literature.

Apport de l'imagerie par resonance magnetique au diagnostic du neuro-lupus: a propos de 10 cas

This study shows the contribution of MRl to diagnosis and follow up of the cerebral lesions in neuro-lupus. Ten cases of neuro-lupus have been reported. The patients affected are 7 women and 3 men having an average age of 34 years. For 8 patients, MRI revealed lesions that were not detected using computed tomography. These lesions were high signal zones on T2, scattered with predilection to deep and sub-cortical cerebral white matter. MRI has also shown cortical and sub-cortical cerebral atrophy for 3 cases, cortical and deep infarcts for 2 cases and both atrophy and infarcts in one case. The MRI diagnosis was normal for the two remaining patients. MRI contributes to the diagnosis confirmation and localization of the cerebral lesions and to the follow-up. In spite of MRI sensitivity, the detection of these lesions remains non specific to neuro-lupus. New methods of exploration as the spectroscopy by magnetic resonance and the cerebral scintigraphy with Technetium 99m could be very helpful in diagnosis of cases for which MRI has shown limitations