Favorable Outcomes of Pediatric Patients Treated With Radiotherapy to the Central Nervous System Who Develop Radiation-Induced Meningiomas
- Department of Radiation Oncology, University of Florida, Gainesville, FL (United States)
- University of Florida Proton Therapy Institute, Jacksonville, FL (United States)
Purpose: To report the outcome of patients treated at the University of Florida who developed meningiomas after radiation to the central nervous system (CNS) for childhood cancer. Methods and Materials: We retrospectively identified 10 patients aged {<=}19 years who received radiotherapy to sites in the craniospinal axis and subsequently developed a meningioma. We report the histology of the radiation-induced meningioma, treatment received, and ultimate outcome among this cohort of patients. Results: Meningioma was diagnosed at a median of 23.5 years after completion of the primary radiation. Fifty percent of second meningiomas were World Health Organization Grade 2 (atypical) or higher. All cases were managed with a single modality: resection alone (n = 7), fractionated radiotherapy (n = 2), and stereotactic radiosurgery (n = 1). The actuarial event-free survival and overall survival rate at 5 years after treatment for a radiation-induced meningioma was 89%. Three patients who underwent resection for retreatment experienced a Grade 3 toxicity. Conclusions: Radiation-induced meningiomas after treatment of pediatric CNS tumors are effectively managed with single-modality therapy. Such late-effect data inform the overall therapeutic ratio and support the continued role of selective irradiation in managing pediatric CNS malignancies.
- OSTI ID:
- 21491545
- Journal Information:
- International Journal of Radiation Oncology, Biology and Physics, Vol. 79, Issue 1; Other Information: DOI: 10.1016/j.ijrobp.2009.10.045; PII: S0360-3016(09)03512-3; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0360-3016
- Country of Publication:
- United States
- Language:
- English
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CENTRAL NERVOUS SYSTEM
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