ArachnoidDura MaterArachnoid CystsPia MaterParietal BoneSubarachnoid SpaceMeningesMeningeal ArteriesCranial SuturesCraniotomyLaminectomySumatriptanHematoma, SubduralMeningiomaForamen MagnumCerebrospinal Fluid RhinorrheaSubdural SpaceTrigeminal NerveNeurosurgical ProceduresMeningeal NeoplasmsEpidural SpaceSpinal Cord CompressionSkull BaseSyringomyeliaSkullCreutzfeldt-Jakob SyndromeCraniosynostosesDecompression, SurgicalMagnetic Resonance ImagingTissue TransplantationFrontal BoneMyelographyCranial SinusesCadaverArachnoiditisPneumocephalusHeadacheSpinal CanalCalcitonin Gene-Related PeptideIsoindolesScalp