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 NeoplasmsIfosfamideFatal OutcomeOncogene Proteins, FusionNeuroblastomaParaparesisThoracic WallVincristineNeoplasms, Germ Cell and EmbryonalAstrocytomaTomography, X-Ray ComputedImmunohistochemistryChromosomes, Human, Pair 11Abdominal NeoplasmsTumor Markers, BiologicalChromosomes, Human, Pair 17Translocation, GeneticTeratomaEtoposidePineal GlandCranial IrradiationNeurofilament ProteinsLomustineMagnetic Resonance ImagingCombined Modality TherapyCyclophosphamideThiotepaRhabdomyosarcomaSoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceTumor Cells, CulturedAntineoplastic Combined Chemotherapy ProtocolsTreatment OutcomeGene RearrangementDNA, NeoplasmPolymerase Chain ReactionMaxillary NeoplasmsGliomaGene AmplificationBiopsyInfant, NewbornPrognosis