LaminectomySpinal Cord NeoplasmsSpinal NeoplasmsSpinal CordDura MaterSpinal Cord InjuriesSpinal Cord DiseasesSpinal Cord CompressionSpinal CanalArachnoid CystsCauda EquinaThoracic VertebraeIophendylateMyelographySpinal DiseasesTuberculomaNeurilemmomaPolyradiculopathyHemangioma, CapillarySpinal Nerve RootsPeripheral Nervous System NeoplasmsMagnetic Resonance ImagingNeurosurgical ProceduresLumbar VertebraeIntervertebral Disc DisplacementCervical VertebraeNeoplasms, Cystic, Mucinous, and SerousCranial Fossa, PosteriorInjections, SpinalParaparesisMeningiomaMeningeal NeoplasmsSpinal NervesLumbosacral RegionSacrumOccipital BoneArachnoidMeningoceleAnesthesia, SpinalDecompression, SurgicalLipomaBrown-Sequard SyndromeInfratentorial NeoplasmsBronchogenic CystEchinococcosisForamen MagnumNeoplasms, Muscle TissueSubarachnoid SpacePancreatic NeoplasmsRadiculopathySpinal StenosisNeoplasmsSyringomyeliaSpinal FusionTomography, X-Ray ComputedSpineSkull Base NeoplasmsIntracranial HypotensionChordomaNeurologic ExaminationEpidural AbscessCentral Nervous System HelminthiasisEpidural SpaceCraniotomySubdural EffusionTreatment OutcomeEpendymomaSpinal InjuriesDermoid CystMuscular Atrophy, SpinalTuberculosis, MeningealDysarthriaEchinococcus granulosusSpinal Cord IschemiaGanglia, SpinalSkin NeoplasmsMicrosurgeryNeoplasms, Multiple PrimaryCavernous SinusThoraxCentral Nervous System Vascular MalformationsCystsMotor NeuronsParaplegiaKidney NeoplasmsTuberculosis, SpinalArteriovenous FistulaNeoplasms, Second PrimaryLow Back PainRetrospective StudiesImmunohistochemistrySpinal CurvaturesHematoma, Epidural, SpinalIntracranial AneurysmPosterior Horn CellsThyroid NeoplasmsAdenocarcinoma, MucinousMyeloproliferative DisordersIntervertebral Disc