PMC4861891_01
(A-C) Axial images from T2-weighted MRI of the lumbar spine demonstrating multiple signal voids (arrows) within paravertrebral soft tissues, neuroforamina, and epidural space of spinal canal; (D-F) sagittal images demonstrating collateral vessels (arrows) coursing through neural foramina and paraspinal muscles.
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MRI of the lumbar spine showed numerous signal voids within the paravertebral soft tissues and the epidural space of the spinal canal, suggestive of extensive collateral vasculature (Fig. 1).
(A-B) Absence of infrarenal portion of IVC and collateral vessels (arrows) in the paraspinal tissues.
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No mass lesion or adenopathy was identified (Figs. 2 and 3).
A-B) Postcontrast CT shows engorgement of the azygous vein (white arrows) and a normal-appearing intrahepatic portion of the IVC (black arrows).
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No mass lesion or adenopathy was identified (Figs. 2 and 3).