Stopped: The study was terminated prematurely due to slow accrual.
RATIONALE: Radiation therapy uses high-energy x-rays to damage tumor cells, but also damages normal cells in the developing brains of children. Combining low-dose radiation therapy in combination with chemotherapy should be effective in treating medulloblastoma while avoiding the long-term side effects of giving higher dose radiation to children with newly diagnosed average risk medulloblastoma.
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Evaluate Rate of Late Neurotoxic Effects
Timeframe: 3 years