title: Fractionated gamma knife radiosurgery for optic nerve tumors: a technical report.
abstract: OBJECTIVE
  The main purpose of this report is to demonstrate the effects of fractionated radiosurgery regimens in the management of optic gliomas MATERIALS and
  
  
  METHODS
  Two patients suffering from progressive loss of vision due to optic nerve gliomas were treated with Gamma Knife radiosurgery in three fractions within three consecutive days instead of a single dose regimen. Patients were followed for 42 and 39 months respectively.
  
  
  RESULTS
  The treatment modality was well tolerated by the patients with radiological and neurological tumor control after 42 and 39 months of follow up. There were no additional complications.
  
  
  CONCLUSIONS
  Fractionated regimens of Gamma Knife surgery offer a very good alternative for lesions such as optic glioma and optic nevre sheath meningioma.
authors.affiliation: Gazi University, Faculty of Medicine, Neurosurgery Department, Ankara, Turkey.
authors.forename: Gokhan
authors.initials: G
authors.lastname: Kurt
authors.forename: Mehmet
authors.initials: M
authors.lastname: Tonge
authors.forename: Alp Ozgun
authors.initials: AO
authors.lastname: Börcek
authors.forename: Eray
authors.initials: E
authors.lastname: Karahacioglu
authors.forename: Ozgur
authors.initials: O
authors.lastname: Gurel
authors.forename: Kemali
authors.initials: K
authors.lastname: Baykaner
authors.forename: Necdet
authors.initials: N
authors.lastname: Ceviker
authors.forename: Sukru
authors.initials: S
authors.lastname: Aykol
mesh_terms: D005500:Follow-Up Studies; D005910:Glioma / Q000601:surgery*; D006801:Humans; D016014:Linear Models; D009900:Optic Nerve / Q000528:radiation effects / Q000601:surgery; D019574:Optic Nerve Neoplasms / Q000601:surgery*; D011874:Radiometry / Q000379:methods*; D016634:Radiosurgery / Q000379:methods*; D013238:Stereotaxic Techniques