Immediate brainstem auditory evoked potentials (BAEP) localized the lesion of acoustic nerve
at the distal of the cochlear nucleus (Fig.
These tumours are benign and don't spread but they may grow large and press on the acoustic nerve
. One in 50,000 people gets acoustic neuroma.
Some research indicates that there may be an association between cell phones and the risk for brain, acoustic nerve
, and salivary gland tumors; low sperm count; headaches; and impaired memory, hearing, and sleep.
The structure of the acoustic nerve
is such that high frequency fibers, representing the basal turn of the cochlea, are located peripherally and low frequency fibers, representing the apical turn, are located in the nerve core .
The most common cranial nerve in the body that schwannomas are seen to involve is the vestibular branch of the acoustic nerve
, and cases localized in the neck region are most commonly seen in the parapharyngeal space.
Conclusion: According to characteristic hearing dysfunction, AN may occur in the afferent pathway of acoustic nerve
, probably accompanied by the pathological changes of efferent nerve in the olivocochlear system inside the brainstem.
- Brain cancer and tumors of the acoustic nerve
(needed for hearing and maintaining balance) and salivary glands.
Most MS cases affect intracranial structures, followed by posterior nerve roots of the spinal canal, and rarely sympathetic chain, acoustic nerve
, cerebellum, orbit, choroid, soft tissue, heart, oral cavity, esophageal wall, stomach, bronchus, retroperitoneum, uterine cervix, and parotid gland [3, 4].