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9번 뇌신경 기원으로 추정되는 경정맥공 신경초종 1례

A Case of Jugular Foramen Schwannoma to be Originated from 9th Cranial Nerve

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Schwannomas of jugular foramen, originating from the glossopharyngeal, vagus and accessory nerve represent approximately 0.17-0.72% of all intracranial tumor, and consists of 1.4-2.9% of all intracranial schwannomas. The clinical presentation varies significantly according to originated nerve and its growth pattern. MR image and temporal bone CT scan have a major role for diagnosis. The treatment of choice is total resection whenever possible. Generally, suboccipital approach is possible for the removal of the tumor, but in case with large size, combination of resection of petrous part of temporal bone with or without transection of sigmoid sinus is may be necessary. A 48-year-old female woman was admitted with a 1-month history of unilateral hearing loss on the right ear with vertigo. Neuro-otological examinations revealed right deafness with abnormal right vestibular function. MR imaging revealed a tumor of the jugular foramen. The tumor was removed through a combined translabyrinthine and suboccipital approach.

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