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Department of Radiation Oncology, Indiana Lions Gamma Knife Center, Indiana University Medical Center, 535 Barnhill Drive, RT 041, Indianapolis, IN 46202, USA. slo@iupui.edu
Ependymoma accounts for 5-10% of all childhood CNS tumors and less than 5% of intracranial tumors in adults. Ependymomas typically have a sharp tumor-brain parenchyma interface and this characteristic lends itself well to stereotactic radiation delivery. Data on the use of stereotactic radiosurgery (SRS) and fractionated stereotactic radiotherapy (FSRT) for ependymoma in various settings have emerged over the past 10 years. SRS has been used in recurrent disease and as a boost after external beam radiation therapy. FSRT has been used in pediatric brain tumors and can potentially limit the long-term toxicities associated with radiation therapy by reducing the amount of normal brain parenchyma treated. Long-term follow-up is needed to determine the long-term efficacy and toxicities associated with these treatment modalities.
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