MeningiomaMeningeal NeoplasmsHematoma, Epidural, CranialEpidural SpaceAnesthesia, EpiduralSkull Base NeoplasmsDura MaterArachnoid CystsAnalgesia, EpiduralNeurofibromatosis 2Epidural NeoplasmsMyelographyCraniotomySpinal Cord NeoplasmsSpinal NeoplasmsBupivacaineNeurilemmomaSpinal Cord CompressionAnesthetics, LocalLaminectomyGenes, Neurofibromatosis 2Neurosurgical ProceduresSkull NeoplasmsCranial Fossa, PosteriorMagnetic Resonance ImagingNeurofibromin 2ArachnoidAnesthesia, ObstetricalBrain NeoplasmsSpinal DiseasesAnalgesia, ObstetricalAngiolipomaChromosomes, Human, Pair 22Tomography, X-Ray ComputedHemangiopericytomaCavernous SinusSpondylitisSpinal CanalMepivacainePain, PostoperativeThoracic VertebraeNeuroma, AcousticSpinal Cord DiseasesMeningoceleSubarachnoid SpaceMicrosurgeryForamen MagnumFiber Optic TechnologyLumbar VertebraeCerebral Ventricle NeoplasmsEuthanasia, AnimalMeningesCraniocerebral TraumaChromosomes, Human, Pair 1ExophthalmosRadiosurgeryPolyradiculopathyHemangioma, CavernousAnalgesia, Patient-ControlledOpiumPetrous BoneDog DiseasesCesarean SectionPneumocephalusSacrumHematoma, SubduralKi-67 AntigenFentanylHysterectomySkull BaseAbscessLumbosacral RegionInjections, EpiduralSpinal Nerve RootsRadiculopathyAnalgesics, OpioidLabor Stage, FirstNerve Compression SyndromesTrigeminal Nerve DiseasesEndoscopyCervical VertebraeReceptors, SomatostatinAmidesNeurofibromaRetrospective StudiesOctreotideTreatment OutcomeNeoplasm Recurrence, LocalSkull FracturesDecompression, SurgicalAbdominal NeoplasmsNeoplasm GradingParaplegiaMonosomyMorphineOrbital DiseasesHematoma, Epidural, SpinalTuberculosis, SpinalLidocaineBrain Edema