Sagittal MR images of patient 8 showing thoracolumbar EDC 1 day post-LP. Sagittal MR images of patient 8 showing thoracolumbar EDC 1 day post-LP. A, Noncontrast.

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Sagittal MR images of patient 8 showing thoracolumbar EDC 1 day post-LP. Sagittal MR images of patient 8 showing thoracolumbar EDC 1 day post-LP. A, Noncontrast sagittal T1-weighted image (TR/TE, 638.3/14) shows low-signal-intensity EDC extending from at least T11-S1. The epidural fat pads are heterogeneous (arrows) secondary to infiltrating fluid. B, Sagittal T2-weighted image (TR/TE, 3260.9/125) shows high-signal-intensity EDC elevating and infiltrating “floating” epidural fat pads (long arrows) and deviating the dura anteriorly (short arrows). B.L. Koch et al. AJNR Am J Neuroradiol 2007;28:1811-1816 ©2007 by American Society of Neuroradiology