Arachnoid CystsArachnoidCystsCyst FluidOvarian CystsSubdural SpaceSyringomyeliaArachnoiditisCentral Nervous System CystsSubarachnoid SpaceEpidermal CystCranial Fossa, MiddleHematoma, SubduralCranial Fossa, PosteriorForamen MagnumCraniotomySubdural EffusionDura MaterNeurosurgical ProceduresSacrococcygeal RegionMediastinal CystSpinal Cord CompressionHerniaNeuroendoscopyMagnetic Resonance ImagingSynovial CystCerebral VentriculographyDecompression, SurgicalLaminectomyBone CystsIophendylateBronchogenic CystHeadacheSpinal Cord DiseasesCerebrospinal Fluid ShuntsHypothalamic DiseasesDermoid CystCisterna MagnaPetrous BoneHydrocephalusFiresetting BehaviorSella TurcicaTrephiningTomography, X-Ray ComputedHematoma, Subdural, ChronicCerebellar DiseasesVentriculoperitoneal ShuntCranial Nerve DiseasesMeningoceleBarotraumaNerve Compression SyndromesHead Injuries, Closed