Published October 1, 2023 | Version v1
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Spinal Arteriovenous Fistula


A 53-year-old man presented with urinary retention, bilateral lower extremity weakness, and numbness after a L2–L5 lumbar laminectomy 6 weeks prior. MRI of the lumbar region revealed spinal cord edema and dilated peri-medullary vessels on T2 images. Digital subtraction angiography revealed early venous filling arising from the segmental T12 artery supplying the spinal cord, confirming the diagnosis.

Spinal dural arteriovenous fistulas (AVFs) are the most common vascular malformation of the spine. It is presumed that spinal AVFs are an acquired disease although their exact etiology is unclear. The diagnosis is suspected when patients present with symptoms of spinal cord venous congestion [1]. Spinal cord edema may be at a distant location from the arteriovenous shunt.



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