Purpose

This phase II trial is studying how well giving radiation therapy together with temozolomide and lomustine works in treating young patients with newly diagnosed gliomas. Radiation therapy uses high energy x-rays to kill tumor cells. Drugs used in chemotherapy, such as temozolomide and lomustine, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving radiation therapy together with temozolomide and lomustine after surgery may kill any remaining tumor cells.