Fig. 1.

A 36-year-old man with a 3-year history of severe low back pain. a Sagittal T2 weighted magnetic resonance imaging scan showed L5/S1 disc degeneration, with no disc herniation. b Discography showed L5/S1 disc disruption with concordant pain reproduction. Note the contrast media leaking out of posterior annulus through a tear. After discography, 10 mg MB was injected into disc through discographic needle. Three days after injection, low back pain was totally relieved. No recrudescence was observed at a 23-month follow-up interval after treatment