Site specific stereotactic radiosurgery/radiotherapy retreatment literature:
Head and Neck/Skull base cancers:
There is considerable evidence that radiosurgical salvage of post-radiotherapy skull base and nasopharynx relapses provides durable local control in a high percentage of patients, with an apparently lower complication rate than is seen with conventional reirradiation techniques (31-36). The preponderance of published radiosurgery experience for recurrent head and neck lesions has been gained with Gamma Knife radiosurgery.

The frameless CyberKnife® design, multiple treatment capability, and virtually unlimited dose-coverage capability compared with Gamma Knife indicates a much larger spectrum of applicability to recurrent head and neck lesions with CyberKnife®.

Case Studies:
Left Optic Nerve Meningioma (WHO Grade 2)
Barrow Neurological Institute

Meningioma (Optic Chiasm)
Stanford University Medical Center