La parálisis facial secundaria a compresión tumoral extrínseca del nervio facial en el ganglio geniculado es una eventualidad rara. Se presenta el caso de un paciente con angioma cavernoso del hueso temporal y clínica de parálisis facial periférica de evolución tórpida (House-Brackmann grado IV), acompañada de ojo seco y ausencia de reflejo estapedial. En el estudio de imagen rutinario con tomografía computarizada y resonancia magnética no se identificaron lesiones, pero las mismas técnicas realizadas tras la sospecha clínica identificaron una lesión menor de 1cm con todas las características radiológicas de un angioma cavernoso. La lesión fue abordada y extirpada microquirúrgicamente a través de una vía de fosa media extradural con evolución favorable de los déficits neurológicos preoperatorios (House-Brackmann grado II).
The facial nerve palsy due to extrinsic tumoral compression of the facial nerve at the geniculate ganglium is very rare. We present the case of a patient with a temporal bone cavernoma and symptoms of a torpid peripheral facial House-Brackmann grade IV nerve palsy with dry eye and loss of stapedial reflex. The routine computed tomographic and magnetic resonance imaging studies showed no abnormalities, but the same imaging techniques done after the clinical suspiction identified a less that 1cm lesion that was compatible with an osseous cavernous angioma. The lesion was approached and removed through a microsurgical middle fossa extradural approach with a good postoperative recovery (House-Brackmann grade II).
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