Auditory schwannoma

The auditory nerve sheath tumor originated from the auditory nerve sheath. It is a typical schwannoma, accounting for 7.79% to 10.64% of intracranial tumors, 93.1% of intracranial schwannomas, and 72.2% of cerebellopontine angle tumors. It is rare to be between 30 and 60 years of age and under 20 years of age. There are slightly more women than men. Most tumors occur in the vestibular segment of the auditory nerve, and a few occur in the cochlea of ​​the nerve. As the tumor grows larger, it presses the outer side of the pontine and the anterior margin of the cerebellum, filling the cerebellar pontine angle recess. Most tumors are unilateral and a few are bilateral; in the case of neurofibromatosis, the opposite is true. This tumor is a benign lesion and does not undergo malignant transformation and metastasis even after repeated recurrences. If it can be removed, it can often obtain a permanent cure.