Purpose: To evaluate the precision of hypofractionated radiosurgery using the Gamma Knife Extend relocatable system in patients with benign neoplasms located close to the optic pathways.
Methods And Materials: A series of 59 irradiation procedures with the Extend system were performed on 12 patients. We treated 11 meningiomas and 1 craniopharyngioma.
Object: The purpose of this study was to compare histopathological changes with imaging findings in different tumors after gamma knife radiosurgery (GKS).
Methods: Five patients of a series of 220 treated with GKS underwent craniotomy for tumor removal 3 to 12 months after radiosurgery. There were two patients with multiple cerebral metastases, one with vestibular schwannoma, one with malignant glioma, and one with meningioma.