Gamma-knife radiosurgery in the treatment of trigeminal schwannomas.
BACKGROUND
Trigeminal nerve schwannomas account for 0.07%-0.28% of all intracranial tumours. Advances in skull base surgery have led to more aggressive resection of these tumours, but surgery may associated with development of new neurological deficits.


METHODS
In this report, we analyse the long-term results 15 patients with newly diagnosed or residual/recurrent trigeminal schwannoma who underwent gamma-knife treatment.


RESULTS
During a mean 61 months of follow-up, MRI revealed reduction of tumour size in 13 and no size change in 2 patients. The tumour growth control rate was 100% and only 1 patient had transient facial numbness and diplopia.


CONCLUSIONS
For patients with small to moderate size trigeminal schwannomas, gamma-knife radiosurgery is associated with good tumour control and a minimal risk of adverse radiation effects.
Peker
S
S
Gamma Knife Radiosurgery Unit, Department of Neurosurgery, Acibadem Kozyatagi Hospital, Istanbul, Turkey. peker@atlas.net.tr
Bayrakli
F
F
Kiliç
T
T
Pamir
M N
MN
D000328:Adult; D000368:Aged; D003390:Cranial Nerve Neoplasms / Q000175:diagnosis / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000601:surgery*; D018365:Neoplasm, Residual / Q000175:diagnosis / Q000601:surgery*; D009442:Neurilemmoma / Q000175:diagnosis / Q000601:surgery*; D009460:Neurologic Examination; D016634:Radiosurgery; D020433:Trigeminal Nerve Diseases / Q000175:diagnosis / Q000601:surgery*