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 NeoplasmsTumor Markers, BiologicalIfosfamideNeuroblastomaFatal OutcomeOncogene Proteins, FusionParaparesisNeoplasms, Germ Cell and EmbryonalVincristineAstrocytomaThoracic WallTomography, X-Ray ComputedImmunohistochemistryChromosomes, Human, Pair 11Abdominal NeoplasmsChromosomes, Human, Pair 17TeratomaTranslocation, GeneticEtoposidePineal GlandCranial IrradiationMagnetic Resonance ImagingCombined Modality TherapyLomustineNeurofilament ProteinsCyclophosphamideRhabdomyosarcomaThiotepaSoft Tissue NeoplasmsIn Situ Hybridization, FluorescenceAntineoplastic Combined Chemotherapy ProtocolsDNA, NeoplasmTreatment OutcomeTumor Cells, CulturedGliomaPolymerase Chain ReactionGene RearrangementGene AmplificationMaxillary NeoplasmsNeoplasm Recurrence, LocalBiopsyCell Line, TumorReverse Transcriptase Polymerase Chain ReactionPrognosisDisease ProgressionSurvival AnalysisInfant, NewbornTumor BurdenTumor Necrosis Factor-alphaChromosome DeletionTranscription FactorsChromosome Aberrations