FIG 6. 36-year-old African-American man with gradual onset of weakness, numbness, spasticity, and bowel and bladder dysfunction.

A–C, T1-weighted MR image (450/15/2) (A) shows intramedullary enhancement and enhancement along the surface of the cord, associated with cord signal abnormality and disk herniation on T2-weighted fast spin-echo image (B). The patient underwent surgical diskectomy and initially did worse. His symptoms and the findings on a T2-weighted fast spin-echo image (3000/102/2) (C) improved with steroids, but recurred 5 months later.