AstrocytomaHypothalamic NeoplasmsOptic Nerve NeoplasmsBrain NeoplasmsCerebellar NeoplasmsThalamic DiseasesOptic ChiasmInfratentorial NeoplasmsGliomaNeurofibromatosis 1GlioblastomaAntineoplastic ProtocolsAnaplasiaBrain Stem NeoplasmsOligodendrogliomaHypothalamus, AnteriorGangliogliomaCraniopharyngiomaGenes, Neurofibromatosis 1EpendymomaNeurofibromin 1Cranial Nerve NeoplasmsCentral Nervous System NeoplasmsProto-Oncogene Proteins B-rafMagnetic Resonance ImagingSupratentorial NeoplasmsComparative Genomic HybridizationSpinal Cord NeoplasmsImmunohistochemistryTumor Markers, BiologicalAstrocytesGene DosageNeoplasm Recurrence, LocalTumor Cells, CulturedGene Expression Regulation, NeoplasticBrainTomography, X-Ray ComputedInfant, NewbornDNA, NeoplasmImmunoenzyme TechniquesChild AbuseNimustinePrecursor Cell Lymphoblastic Leukemia-LymphomaAdult Survivors of Child AbuseGlial Fibrillary Acidic ProteinReverse Transcriptase Polymerase Chain ReactionChild Abuse, SexualGenes, ModifierOligonucleotide Array Sequence AnalysisCell Transformation, NeoplasticRisk Factors