GliomaBrain NeoplasmsDisease ManagementGlioblastomaAstrocytomaOptic Nerve GliomaCase ManagementPatient Care ManagementPain ManagementTreatment OutcomeBrain Stem NeoplasmsRisk ManagementCell Line, TumorDacarbazineRetrospective StudiesInformation ManagementTumor Cells, CulturedPractice Guidelines as TopicAntineoplastic Agents, AlkylatingAirway ManagementNeoplasm GradingSupratentorial NeoplasmsTime FactorsPrognosisMice, NudeMagnetic Resonance ImagingNeoplasm InvasivenessCombined Modality TherapyFollow-Up StudiesNeoplasm TransplantationGene Expression Regulation, NeoplasticManagement Information SystemsGliosarcomaProspective StudiesRisk FactorsIsocitrate DehydrogenaseAntineoplastic AgentsCentral Nervous System NeoplasmsTomography, X-Ray ComputedMedication Therapy ManagementCell ProliferationConservation of Natural ResourcesMeningiomaDatabase Management SystemsNimustineApoptosisWaste ManagementPhysician's Practice PatternsEvidence-Based MedicineUnited StatesTotal Quality ManagementBrainPostoperative ComplicationsQuestionnairesXenograft Model Antitumor Assays