AstrocytomaCerebellar NeoplasmsHypothalamic NeoplasmsOptic Nerve NeoplasmsThalamic DiseasesBrain NeoplasmsAntineoplastic ProtocolsCystsOptic ChiasmHypothalamus, AnteriorNeurofibromatosis 1CraniopharyngiomaSupratentorial NeoplasmsProto-Oncogene Proteins B-rafGliomaComparative Genomic HybridizationMagnetic Resonance ImagingCyst FluidOvarian CystsEpidermal CystInfratentorial NeoplasmsGlioblastomaAnaplasiaBrain Stem NeoplasmsOligodendrogliomaGangliogliomaGenes, Neurofibromatosis 1Mediastinal CystEpendymomaNeurofibromin 1Synovial CystBone CystsCranial Nerve NeoplasmsBronchogenic CystCentral Nervous System NeoplasmsDermoid CystSpinal Cord NeoplasmsOdontogenic Cysts