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Distal cord hyperintensity and subtle expansion extend from T11 to conus at L1. On high resolution T2 images and post contrast T1 sequences, a tangle of abnormal flow voids and enhancing vessels can be appreciated posterior to the distal cord.
TRICKS MRA confirms the presence of a tangle of abnormal vessels overlying the cord, fed by a left T12 artery.
Findings are consistent with spinal dural AVF.