Contrast examination of the spinal epidural space.
D003560:Cysts / Q000000981:diagnostic imaging*; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000000981:diagnostic imaging*; D008161:Lumbosacral Region; D011859:Radiography; D013115:Spinal Canal / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D013122:Spinal Diseases / Q000000981:diagnostic imaging*