HighlightsEpidermoid cysts are benign tumors -IEIC-that originate in the spine or intracraneally.Intradural compose 75% of epidermoid cysts and 25% are extradural in the diploic space—IEIC.These benign lesions although they are of low incidence, are seen very rarely in intradiploic locations and above all, of significant size, may produce significant mass effect in patients, which was initially tolerated because of its slow growth, however, they may become decompensate and cause intracranial hypertension syndrome.
La hidrocefalia tetraventricular atribuible a bloqueo de los orificios de salida del cuarto ventrículo es por lo general causada tanto por procesos inflamatorios como por anomalías congénitas tales como el síndrome de Dandy Walker, malformación de Chiari y esclerosis tuberosa. Se presenta el caso de un niño de 4 años de edad con aumento de perímetro cefálico de 57 cm con hiperreflexia de miembros inferiores. Sólo muestra bipedestación con apoyo. Se realizó diagnóstico de hidrocefalia tetraventricular. La cine-resonancia magnética de cerebro evidencia hidrocefalia, se decide intervención quirúrgica realizándose tercer ventriculostomía endoscópica. Egresa una semana después con buen pronóstico.
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