Neurofibromatosis 1Neurofibromin 1Genes, Neurofibromatosis 1Neurofibromatosis 2Genes, Neurofibromatosis 2NeurofibromatosesNeurofibromin 2Neurofibroma, PlexiformNeurofibromaCafe-au-Lait SpotsOptic Nerve GliomaNerve Sheath NeoplasmsNeurilemmomaOptic Nerve NeoplasmsNeuroma, AcousticNeurofibrosarcomaras GTPase-Activating ProteinsPeripheral Nervous System NeoplasmsCranial Nerve NeoplasmsSchwann CellsAuditory Brain Stem ImplantsGTPase-Activating ProteinsBone Diseases, DevelopmentalHamartomaNervous System NeoplasmsMeningoceleMeningiomaChromosomes, Human, Pair 17ras ProteinsProto-Oncogene Proteins p21(ras)Learning DisordersMutationProteinsMosaicismChromosomes, Human, Pair 22Decalcification, PathologicPseudarthrosisGlomus TumorIris NeoplasmsNoonan SyndromePheochromocytomaMixed Tumor, MalignantMagnetic Resonance ImagingSomatostatinomaThoracic NeoplasmsMeningeal NeoplasmsMelanocytesProteus SyndromeFacial NeoplasmsLeukemia, Myelomonocytic, JuvenileAdrenal Gland NeoplasmsGerm-Line MutationOncogene Protein p21(ras)Base SequencePhenotypePigmentation DisordersNeoplasms, Multiple PrimaryMolecular Sequence Datap120 GTPase Activating ProteinGene DeletionTomography, X-Ray ComputedAstrocytomaGTP PhosphohydrolasesHearing Loss, CentralArachnoidVagus Nerve DiseasesPedigreeBrain NeoplasmsParagangliomaSignal TransductionCerebellar DiseasesGenes, rasNeoplasms, MesothelialNerve Tissue ProteinsExonsLoss of HeterozygosityFatal OutcomeS100 ProteinsSphenoid BoneDNA Mutational AnalysisPolymerase Chain ReactionGenes, Tumor SuppressorHeterozygoteContractureSyndecan-2Soft Tissue NeoplasmsCell ProliferationGenetic MarkersOrbital Neoplasms