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, FusionIfosfamideVincristineFatal OutcomeNeuroblastomaParaparesisThoracic WallNeoplasms, Germ Cell and EmbryonalTomography, X-Ray ComputedAstrocytomaImmunohistochemistryTumor Markers, BiologicalChromosomes, Human, Pair 11Abdominal NeoplasmsChromosomes, Human, Pair 17Translocation, GeneticTeratomaEtoposidePineal GlandCranial IrradiationCombined Modality TherapyNeurofilament ProteinsLomustineCyclophosphamideMagnetic Resonance ImagingThiotepaIn Situ Hybridization, FluorescenceRhabdomyosarcomaTumor Cells, CulturedAntineoplastic Combined Chemotherapy ProtocolsSoft Tissue NeoplasmsTreatment OutcomeGene RearrangementDNA, NeoplasmPolymerase Chain ReactionMaxillary NeoplasmsGliomaGene AmplificationPrognosisBiopsyInfant, NewbornSurvival Analysis