Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralSarcoma, EwingMedulloblastomaCerebellar NeoplasmsSupratentorial NeoplasmsNeuroectodermal Tumor, MelanoticBrain NeoplasmsRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1PinealomaEpendymomaSpinal Cord NeoplasmsChromosomes, Human, Pair 22Sarcoma, Small CellRhabdoid TumorBone NeoplasmsCentral Nervous System NeoplasmsThoracic NeoplasmsOrbital NeoplasmsIfosfamideOncogene Proteins, FusionNeuroblastomaParaparesisFatal OutcomeThoracic WallVincristineNeoplasms, Germ Cell and EmbryonalAstrocytomaChromosomes, Human, Pair 11ImmunohistochemistryAbdominal NeoplasmsTomography, X-Ray ComputedTumor Markers, BiologicalChromosomes, Human, Pair 17Translocation, GeneticEtoposideTeratomaPineal GlandCranial IrradiationNeurofilament ProteinsLomustineCombined Modality TherapyMagnetic Resonance ImagingCyclophosphamideThiotepaRhabdomyosarcomaSoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceTumor Cells, CulturedAntineoplastic Combined Chemotherapy ProtocolsGene RearrangementDNA, NeoplasmMaxillary NeoplasmsGliomaTreatment OutcomeGene AmplificationPolymerase Chain Reaction