Dura MaterArachnoidArachnoid CystsParietal BoneSubarachnoid SpaceMeningesPia MaterMeningeal ArteriesCraniotomyCranial SuturesLaminectomyHematoma, SubduralSumatriptanMeningiomaForamen MagnumSubdural SpaceNeurosurgical ProceduresCerebrospinal Fluid RhinorrheaMeningeal NeoplasmsTrigeminal NerveEpidural SpaceSpinal Cord CompressionSyringomyeliaSkull BaseSkullDecompression, SurgicalCraniosynostosesCreutzfeldt-Jakob SyndromeMagnetic Resonance ImagingCranial SinusesArachnoiditisMyelographyHeadacheTissue TransplantationCadaverFrontal BoneCranial Fossa, PosteriorPneumocephalusInfratentorial NeoplasmsSpinal CanalCalcitonin Gene-Related PeptideScalpIsoindolesTomography, X-Ray ComputedCentral Nervous System CystsTrigeminal GanglionMeningitisTrigeminal Nucleus, SpinalLongitudinal LigamentsCranial Fossa, MiddlePolytetrafluoroethyleneCerebrospinal Fluid PressureLigamentum FlavumThoracic VertebraeSubdural EffusionMigraine DisordersHematoma, Subdural, ChronicSpinal Cord DiseasesHerniaGranulation TissueCerebrospinal Fluid