title: Extradural pseudocysts. A cause of pain after lumbar-disc operation.
mesh_terms: D000328:Adult; D001100:Arachnoiditis / Q000000981:diagnostic imaging; D003560:Cysts / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000601:surgery*; D007796:Laminectomy; D008297:Male; D008875:Middle Aged; D009192:Myelography; D010146:Pain / Q000209:etiology; D011183:Postoperative Complications; D013122:Spinal Diseases / Q000000981:diagnostic imaging / Q000601:surgery; D013124:Spinal Injuries / Q000150:complications