SCH 66336 in Treating Children With Recurrent or Progressive Brain Tumors

brain and central nervous system tumors, childhood craniopharyngioma, childhood central nervous system germ cell tumor, childhood oligodendroglioma, childhood choroid plexus tumor, childhood grade i meningioma, childhood grade ii meningioma, childhood grade iii meningioma, recurrent childhood cerebellar astrocytoma, recurrent childhood cerebral astrocytoma, recurrent childhood medulloblastoma, recurrent childhood visual pathway and hypothalamic glioma