Magnetic resonance imaging revealed a mass on the intracanalicular segment of cranial nerve VIII on the left side, consistent with acoustic schwannoma.
Magnetic resonance imaging (MRI) revealed an enhancing 5 x 3-mm mass on the intracanalicular segment of cranial nerve VIII on the left, consistent with acoustic schwannoma (figure 1).
A 55-year-old woman with acoustic schwannoma
was scheduled for craniotomy.
SRS was performed for acoustic schwannoma
either as first-time treatment or for residual tumor.
These indications include acoustic schwannomas
and complex meningiomas that may be close to hearing and visual anatomy, respectively, and large pituitary lesions, for example, that require the accumulation of a large dose over multiple sessions to protect healthy brain tissues.
Primary extracranial meningiomas of the head and neck have also shown to have a relationship with neurofibromatosis, particularly type 2 NF characterized by bilateral acoustic schwannomas
and lack of skin findings and having a defect on chromosome 22q with an autosomal-dominant inheritance pattern .
A leading neurosurgery team of UF faculty physicians at Shands used the new Trilogy Tx(TM) medical linear accelerator from Varian Medical Systems to treat three men and five women for conditions that included arteriovenous malformations, acoustic schwannomas
, meningioma, and metastatic brain tumors.