CraniotomyIncidenceNeurosurgical ProceduresPneumocephalusFrontal BoneHematoma, Subdural, AcuteTrephiningBrain NeoplasmsHead Injuries, PenetratingHematoma, SubduralIntracranial AneurysmDelayed Emergence from AnesthesiaDura MaterMeningeal NeoplasmsSurgical Fixation DevicesSupratentorial NeoplasmsFrontal SinusMeningiomaArachnoid CystsMicrosurgerySubdural SpaceTomography, X-Ray ComputedPostoperative ComplicationsGlasgow Coma ScaleHematoma, Epidural, CranialHematoma, Subdural, ChronicCerebrospinal Fluid RhinorrheaTemporal BoneRetrospective StudiesCranial Fossa, AnteriorFourth VentricleStereotaxic TechniquesMagnetic Resonance ImagingBrain AbscessNeurosurgerySurgical InstrumentsHematoceleCerebellar DiseasesSurgical FlapsVentriculostomyTreatment OutcomeSubarachnoid HemorrhageBrain InjuriesConsciousness MonitorsSkull FracturesSkull BaseCranial Nerve NeoplasmsRisk FactorsAneurysm, RupturedCerebral AngiographyProspective StudiesConscious SedationIntracranial HemorrhagesSkull Base NeoplasmsTime FactorsCerebral VeinsDecompression, SurgicalBrain DiseasesCraniopharyngiomaFollow-Up StudiesOrbitMonitoring, IntraoperativeAnterior Cerebral ArteryCerebral HemorrhageIntracranial Hemorrhage, HypertensiveAnesthesiaSkullNeuroendoscopyCranial Fossa, MiddleAnesthesia, General