Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralSarcoma, EwingMedulloblastomaCerebellar NeoplasmsSupratentorial NeoplasmsNeuroectodermal Tumor, MelanoticBrain NeoplasmsRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1PinealomaChromosomes, Human, Pair 22EpendymomaSpinal Cord NeoplasmsSarcoma, Small CellRhabdoid TumorBone NeoplasmsCentral Nervous System NeoplasmsThoracic NeoplasmsOrbital NeoplasmsOncogene Proteins, FusionIfosfamideVincristineNeuroblastomaParaparesisFatal OutcomeThoracic WallNeoplasms, Germ Cell and EmbryonalAstrocytomaImmunohistochemistryTomography, X-Ray ComputedTumor Markers, BiologicalChromosomes, Human, Pair 11Abdominal NeoplasmsChromosomes, Human, Pair 17Translocation, GeneticEtoposideTeratomaPineal GlandCranial IrradiationCombined Modality TherapyNeurofilament ProteinsLomustineCyclophosphamideMagnetic Resonance ImagingThiotepaIn Situ Hybridization, FluorescenceRhabdomyosarcomaTumor Cells, CulturedAntineoplastic Combined Chemotherapy ProtocolsSoft Tissue NeoplasmsTreatment OutcomeGene RearrangementDNA, NeoplasmMaxillary NeoplasmsGliomaGene AmplificationPolymerase Chain Reaction