Synovial CystCystsPolyradiculopathySpinal DiseasesZygapophyseal JointNerve Compression SyndromesHypoglossal Nerve DiseasesLaminectomyLumbar VertebraeSpinal Cord CompressionCyst FluidDecompression, SurgicalRadiculopathyHip ContractureOdontoid ProcessAtlanto-Axial JointCauda EquinaOvarian CystsSpinal Nerve RootsEpidermal CystMagnetic Resonance ImagingSpondylolisthesis