HematomaNeurosurgeryHematoma, Epidural, CranialHematoma, SubduralHematoma, Subdural, ChronicHematoma, Subdural, AcuteNeurosurgical ProceduresHematoma, Epidural, SpinalHematoma, Subdural, IntracranialCraniotomySurgical EquipmentHematoma, Subdural, SpinalTomography, X-Ray ComputedDefensive MedicineIntracranial AneurysmCraniocerebral TraumaMicrosurgeryInsurance, LiabilityStereotaxic TechniquesSphenoid BoneCerebral HemorrhageTrephiningSphenoid SinusNeuronavigationOccipital BoneMagnetic Resonance ImagingGlasgow Coma ScaleMeningiomaHydrocephalusNeurologyCerebral AngiographyLaminectomyCerebrospinal Fluid ShuntsHistory, 20th CenturyRadiculopathyAnterior Cerebral ArteryAneurysm, RupturedSubarachnoid HemorrhageMeningeal NeoplasmsNeurologic ExaminationPostoperative ComplicationsSubdural SpaceSella TurcicaBrain NeoplasmsEmbolization, TherapeuticCadaverSkull FracturesTreatment OutcomeBrain DiseasesRetrospective StudiesEndoscopyFatal OutcomeCervical VertebraeAngiography, Digital SubtractionCerebral Hemorrhage, TraumaticLumbar VertebraeBasal Ganglia HemorrhageDura MaterPituitary NeoplasmsPreoperative CareRectus AbdominisHead Injuries, ClosedIntracranial HemorrhagesImaging, Three-DimensionalPhysician's Practice PatternsSubdural EffusionJapanCranial Fossa, PosteriorProspective StudiesReferral and ConsultationDrainageRemission, SpontaneousClinical ProtocolsLigamentum FlavumIntracranial Hemorrhage, HypertensiveGliomaRetroperitoneal SpaceEsophageal DiseasesSuctionArachnoid CystsDecision MakingFollow-Up StudiesQuestionnairesAnticoagulantsDecompression, SurgicalBrain Hemorrhage, TraumaticWounds, NonpenetratingBrain EdemaGlasgow Outcome ScaleRupture, SpontaneousExtravasation of Diagnostic and Therapeutic MaterialsOrbital DiseasesSpinal Cord CompressionTomography Scanners, X-Ray ComputedPhysician-Patient RelationsArachnoidAcute DiseaseAortic DiseasesCerebellar DiseasesWarfarin