[Jugular foramen neurinoma--report of a case (author's transl)]

A case of jugular foramen neurinoma was presented in detail with a review of fifty-seven cases reported in the literature. A thirty-six-year old man was admitted to the hospital with complaints of tinnitus and hearing loss in the right side with vertigo. Neuro-otological examination revealed the definite sensorineural hearing loss and the disturbance of vestibular function on the right. Cranial nerve palsy was not revealed except for the right eighth nerve. Craniotomogram and axial view showed enlargement of the right jugular foramen. CT, vertebral angiogram and pneumoencephalotomogram demonstrated a space taking lesion at the right cerebellopontine angle. By suboccipital craniectomy a walnut-size tumor was disclosed at the jugular foramen with total removal. However, the origin of the tumor was not confirmed. The post-operative course was uneventful and hearing loss was gradually improved.