Neuroectodermal Tumors, PrimitiveNeuroectodermal TumorsNeuroectodermal Tumors, Primitive, PeripheralNevus, PigmentedNevus, Epithelioid and Spindle CellNeuroectodermal Tumor, MelanoticDysplastic Nevus SyndromeNevus, BlueSkin NeoplasmsMelanomaSarcoma, EwingMedulloblastomaCerebellar NeoplasmsNevusSupratentorial NeoplasmsBrain NeoplasmsProto-Oncogene Protein c-fli-1RNA-Binding Protein EWSMelanocytesPinealomaChromosomes, Human, Pair 22EpendymomaMelanosisTumor Markers, BiologicalDermoscopySpinal Cord NeoplasmsSarcoma, Small CellBone NeoplasmsNeuroblastomaMaxillary NeoplasmsRhabdoid TumorImmunohistochemistryCentral Nervous System NeoplasmsNeoplasms, Germ Cell and EmbryonalThoracic NeoplasmsFatal OutcomeTomography, X-Ray ComputedChromosomes, Human, Pair 11Neural PlateOncogene Proteins, FusionAstrocytomaAntigens, NeoplasmCell Line, TumorOrbital NeoplasmsVincristineIfosfamideTranslocation, GeneticSkull NeoplasmsGanglioneuromaNeoplasm ProteinsParaparesisThoracic WallMagnetic Resonance ImagingHutchinson's Melanotic FreckleDNA, NeoplasmTumor Cells, CulturedBiopsyTeratomaPeripheral Nervous System NeoplasmsNeoplasms, Nerve TissueCombined Modality TherapyPolymerase Chain ReactionIn Situ Hybridization, FluorescenceTreatment OutcomeTumor BurdenSoft Tissue NeoplasmsEtoposideTumor Necrosis Factor-alphaRhabdomyosarcomaAbdominal NeoplasmsPineal GlandChromosomes, Human, Pair 17Immunoenzyme TechniquesGliomaMART-1 AntigenDisease ProgressionRetinoblastomaNeurofilament ProteinsCranial IrradiationRetrospective StudiesThoracic Surgical ProceduresPrognosisNeurocutaneous SyndromesReverse Transcriptase Polymerase Chain ReactionGene Expression Regulation, NeoplasticAntibodies, MonoclonalCell Transformation, NeoplasticCyclophosphamideRNA, MessengerConjunctival NeoplasmsLentigoMelanoma-Specific AntigensSarcoma, Clear CellPhosphopyruvate HydrataseGangliosidesCell DivisionTranscription FactorsLomustineSynaptophysinAntineoplastic Combined Chemotherapy Protocols