OligodendrogliomaAstrocytomaChromosomes, Human, Pair 19Brain NeoplasmsChromosomes, Human, Pair 1GliomaGlioblastomaLoss of HeterozygosityNervous System NeoplasmsLomustineEpendymomaIsocitrate DehydrogenaseDNA Modification MethylasesChromosome DeletionNeoplasm GradingChromosomes, Human, Pair 10ProcarbazineImmunohistochemistrySupratentorial NeoplasmsCentral Nervous System NeoplasmsPrognosisIn Situ Hybridization, FluorescenceDNA Repair EnzymesTumor Markers, BiologicalGlial Fibrillary Acidic ProteinMeningiomaRetrospective StudiesMagnetic Resonance ImagingSurvival AnalysisSurvival RateTreatment OutcomeTumor Suppressor ProteinsOligodendrogliaGene Expression Regulation, NeoplasticDNA MethylationDisease-Free SurvivalBrainNeoplasm Recurrence, LocalCartilage DiseasesMicrosatellite RepeatsTumor Suppressor Protein p53MutationVincristineChromosome AberrationsReverse Transcriptase Polymerase Chain ReactionAntineoplastic Combined Chemotherapy ProtocolsDNA, NeoplasmAstrocytesPolymerase Chain ReactionGenes, Tumor SuppressorFollow-Up StudiesLeukopeniaVasospasm, IntracranialSubarachnoid HemorrhageGene AmplificationKaplan-Meier EstimateHepatic EncephalopathyGene DeletionReceptor, Epidermal Growth FactorCombined Modality TherapyEmbolization, TherapeuticDisease ProgressionRadiosurgeryReproducibility of ResultsNeoplasm StagingDrug Administration ScheduleNucleic Acid HybridizationGene Expression ProfilingSeverity of Illness IndexIntracranial AneurysmFeasibility StudiesInfusions, IntravenousSensitivity and SpecificityNeutropenia