Ossification of the posterior longitudinal ligament diagnosed by MR.
D000368:Aged; D006801:Humans; D008022:Ligaments / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D009333:Neck / Q000473:pathology*; D009999:Ossification, Heterotopic / Q000175:diagnosis*; D013117:Spinal Cord Compression / Q000209:etiology*