슬신경절에서 발생한 안면신경초종

Facial nerve schwannoma on the geniculate ganglion: case report

Schwannomas arising from the geniculate ganglion are very rare. The author report the clinical feature, image and surgical findings of facial nerve schwannoma originated from the geniculate ganglion. The clinical feature was right facial paralysis for five years. Imaging study revealed a mass on the cerebellopontine angle, meatal, labyrinthine, geniculate, and greater petrosal portion of the petrous bone. Subtotal tumor removal with intraoperative facial nerve monitoring was done through a subtemporal extra- and intradural approach. Anatomical relationship of the facial nerve at the petrous temporal bone, clinical presentation, differential diagnosis, and management are discussed.