Study Design. This report describes a clinical series of seven patients who had surgically proven internal disc disruption, normal magnetic rasonance imaging, and abnormal discograms morphologically. Summary of Background Data. Numerous reports in the literature have described the utility of magnetic resonance imaging and discography in diagnosing degenerative disesse within lumbar intervertebral discs. Results. Discography may be useful in patients with persistent symptoms despite a normal or equivocal magnetic resonance imaging study. © 1994, J.B. Lippincott Company.