What is a brain stem glioma?
Brain stem glioma is the most frequent neoplasm affecting the brain stem.
It occurs mostly in children and adolescents and is often associated with neurofibromatosis.
The tumor arises in the region of the VI nerve nucleus and gradually enlarges to involve the VI and VII nerves and adjacent vestibular structures.
Vestibular, cerebellar, and lower cranial nerve symptoms may be present and slowly progressive over a period of months or years before the diagnosis is made because motor and sensory symptoms in the body are usually absent.