HematomaHematoma, Epidural, CranialHematoma, SubduralHematoma, Subdural, ChronicHematoma, Subdural, AcuteHematoma, Epidural, SpinalHematoma, Subdural, IntracranialDura MaterHematoma, Subdural, SpinalCerebral HemorrhageTrephiningCentral Nervous System Vascular MalformationsCraniotomyTomography, X-Ray ComputedSubdural SpaceSkull FracturesNeurosurgical ProceduresCerebral VeinsSubdural EffusionCerebral AngiographyMagnetic Resonance ImagingCerebral Hemorrhage, TraumaticLaminectomyMeningeal ArteriesArteriovenous FistulaCraniocerebral TraumaSinus Thrombosis, IntracranialBasal Ganglia HemorrhageCranial Fossa, PosteriorArachnoidIntracranial HemorrhagesGlasgow Coma ScaleCavernous SinusRectus AbdominisEmbolization, TherapeuticTreatment OutcomeHead Injuries, ClosedHeadacheRemission, SpontaneousIntracranial HypotensionDrainageDecompression, SurgicalIntracranial Arteriovenous MalformationsMyelographyLigamentum FlavumArachnoid CystsSpinal Cord CompressionRetrospective StudiesSuctionSpinal PuncturePostoperative ComplicationsEpidural SpaceRetroperitoneal SpaceIntracranial Hemorrhage, HypertensiveCranial Fossa, AnteriorAnticoagulantsEsophageal DiseasesExtravasation of Diagnostic and Therapeutic MaterialsSubarachnoid HemorrhageParaparesisBrain Hemorrhage, TraumaticWounds, NonpenetratingFatal OutcomePost-Dural Puncture HeadacheRupture, SpontaneousTime FactorsBrain EdemaAcute DiseaseCerebellar DiseasesGlasgow Outcome ScaleExophthalmosNeurologic ExaminationOrbital DiseasesSpinal Cord DiseasesData CollectionTomography Scanners, X-Ray ComputedMeningeal NeoplasmsLumbar VertebraeBlood Specimen CollectionProspective StudiesAortic DiseasesAneurysm, RupturedOccipital BoneMeningoceleIntracranial AneurysmSubarachnoid SpaceSkull NeoplasmsWarfarinNeuroendoscopyMeningiomaCervical VertebraeIntracranial HypertensionThalamic DiseasesPneumocephalusStereotaxic TechniquesPolyradiculopathyPolyvinylsNeurosurgeryBrain InjuriesMagnetic Resonance Angiography