Spine MRI of a patient who received a contaminated epidural injection of methylprednisolone

(A) Sagittal T1 post-gadolinium image showing dural and leptomeningeal enhancement at L5/S1.
(B) Sagittal post-gadolinium image showing dural and leptomeningeal contrast enhancement.
(C and D) Axial post-gadolinium T1 images that correlate with images A and B, respectively, and show dural and nerve root enhancement (post-contrast).