Nerve Sheath NeoplasmsNeurofibromatosis 1Peripheral Nervous System NeoplasmsNeurofibromaNeurofibroma, PlexiformNeurilemmomaGenes, Neurofibromatosis 1Sarcoma, SynovialNeurofibromin 1Soft Tissue NeoplasmsS100 ProteinsPeripheral NervesSchwann CellsNeurofibromatosesThoracic NeoplasmsSarcomaHMGA ProteinsEpithelioid CellsScalpImmunohistochemistryPeripheral Nerve InjuriesLiposarcomaThighTumor Markers, BiologicalFatal OutcomeSciatic NerveCell Line, TumorMagnetic Resonance ImagingReverse Transcriptase Polymerase Chain ReactionTissue Array AnalysisCell ProliferationIn Situ Hybridization, FluorescenceGene Expression Regulation, NeoplasticTomography, X-Ray ComputedCell Transformation, NeoplasticTranslocation, GeneticOncogene Proteins, FusionGene Expression ProfilingImmunoenzyme TechniquesOptic NerveAntineoplastic AgentsSignal TransductionMyelin SheathPrognosisXenograft Model Antitumor AssaysOligonucleotide Array Sequence AnalysisNeurothekeomaReceptor, Epidermal Growth FactorNerve Regeneration