Synovial CystCystsPolyradiculopathySpinal DiseasesZygapophyseal JointLumbar VertebraeSpineNerve Compression SyndromesLaminectomyHypoglossal Nerve DiseasesSpinal Cord CompressionDecompression, SurgicalCyst FluidRadiculopathyHip ContractureAtlanto-Axial JointOdontoid ProcessCauda EquinaOvarian CystsSpondylolisthesisCervical VertebraeSpinal Nerve RootsMagnetic Resonance ImagingEpidermal Cyst