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Sagittal T2W MRI demonstrates a thin ventral extradural fluid collection (A, arrows). Sagittal reconstructed image from a subsequent prone dynamic CT myelogram shows a ventral leak at the T8-T9 interspace with clearly distinct epidural contrast (B, solid arrow) and intrathecal contrast (B, dashed arrow). Axial image from the same exam demonstrates a T6 CSF-venous fistula with opacification of intraosseous veins (C, dashed arrows), as well as the right paraspinal vein (C, solid arrow).
