Cerebellopontine Angle Neurovascular Cross Compression Syndrome of Eigth Cranial Nerve.

Abstract

We have recently treated two patients with neurovascular cross compression (NVCC) of the eighth cranial nerve in the cerebellopontine angle, one with progressive sensorineural hearing loss and one with Ménière's disease.
In these patients with NVCC who had a very high pure tone threshold fluctuating with a low frequency disorder, the AICA and its branches were found to be entrapped between the seventh and eighth cranial nerves.
Ultimately, NVCC of the eighth cranial nerve seems to be composed of one group of NVCC with a circulatoroy disorder of the AICA entrapped between the seventh and eighth nerves, and another group of NVCC with irritative nerve dysfunction of the eighth cranial nerve compressed by AICA, as we reported previously.