Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralMedulloblastomaBrain NeoplasmsCerebellar NeoplasmsEpendymomaSarcoma, EwingSupratentorial NeoplasmsNeuroectodermal Tumor, MelanoticBrain Stem NeoplasmsAstrocytomaRNA-Binding Protein EWSProto-Oncogene Protein c-fli-1PinealomaGliomaCentral Nervous System NeoplasmsSpinal Cord NeoplasmsInfratentorial NeoplasmsChromosomes, Human, Pair 22Sarcoma, Small CellRhabdoid TumorBone NeoplasmsMagnetic Resonance ImagingNeuronavigationTumor Markers, BiologicalCraniopharyngiomaThoracic NeoplasmsOrbital NeoplasmsGlioblastomaNeuroblastomaIfosfamideOncogene Proteins, FusionFatal OutcomeParaparesisNeoplasms, Germ Cell and EmbryonalVincristineThoracic WallImmunohistochemistryTomography, X-Ray ComputedTumor Cells, CulturedInfant, NewbornChromosomes, Human, Pair 11Abdominal NeoplasmsChromosomes, Human, Pair 17TeratomaCranial IrradiationEtoposideTranslocation, GeneticTreatment OutcomeSurvival AnalysisPineal GlandSurvivorsCombined Modality TherapyLomustinePediatricsNeurofilament ProteinsCyclophosphamideThiotepaAntineoplastic AgentsRhabdomyosarcomaMaximum Tolerated DoseMagnetic Resonance SpectroscopySoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceAntineoplastic Combined Chemotherapy ProtocolsDNA, NeoplasmCell Line, TumorPolymerase Chain ReactionGene RearrangementBrainGene AmplificationNeoplasm Recurrence, LocalMaxillary NeoplasmsReverse Transcriptase Polymerase Chain ReactionReproducibility of ResultsDisease ProgressionTumor BurdenPrognosisTumor Necrosis Factor-alphaRetrospective StudiesTranscription FactorsChromosome DeletionBrain Injuries