title: Extradural cyst of ligamentum flavum L 4--a case.
mesh_terms: D003560:Cysts / Q000473:pathology / Q000628:therapy; D005260:Female; D005727:Ganglia, Spinal; D006801:Humans; D008022:Ligaments; D008159:Lumbar Vertebrae; D008875:Middle Aged; D009408:Nerve Compression Syndromes / Q000209:etiology; D013122:Spinal Diseases / Q000473:pathology / Q000628:therapy; D013126:Spinal Nerve Roots