Urea in positive contrast myelography.
D003287:Contrast Media; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000175:diagnosis; D009192:Myelography; D013120:Spinal Cord Neoplasms / Q000175:diagnosis; D014508:Urea
D003287:Contrast Media; D014508:Urea