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FIG 2. Axial CT scan at the L5-Sl level in a 66-year-old patient with epidural lipomatosis shows low-attenuation fat surrounding the dural sac in the spinal canal; the sac shows Y-shaped or inverted triangular deformation (arrows). Disk bulge (anteriorly) and ligamenta flava (posterolaterally) lie peripheral to the fat.
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