Figure 1

MRI including the lumbar spine, demonstrating spinal epidural lipomatosis in the presented patient after 4.5 months of treatment with prednisone and methylprednisolone. The arrows point to selected areas of the pathological accumulation of fatty tissue in the epidural space. This was not present in a baseline MRI performed before initiation of corticosteroid therapy (image not shown). T1 weighted images; A, sagittal plane; B, axial plane.