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Spinal dural arteriovenous fistulas(SDAVFs)are the most common type of spinal vascular malformation.The arteriovenous shunts,located entirely outside the spinal cord,cause a clinical picture of chronic progressive myelopathy believed to arise from the effects of increased venous pressure and impaired venous drainage on the spinal cord.Despite their well- described clinical and angiographic features,no reports have documented the spinal cord pathology in a case of angiographically or pathologically proven SDAVF.We report such a patient in whom a spinal cord biopsy supported increased venous pressure as a mechanism of neurologic dysfunction. |
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angiography,spinal
fistula,arterio-venous,dural
gadolinium
leg weakness,bilateral
malformation,vascular,dural
misdiagnosis
MRI
MRI,abnormal
MRI,contrast enhanced
MRI,spinal cord
MRI,spinal cord,increased intramedullary cord signal
myelopathy
myelopathy,chronic progressive
myelopathy,necrotizing
myelopathy,venous hypertensive
spinal cord,biopsy
spinal cord,enlargement
spinal cord,ischemic lesion of
spinal cord,pathologic exam of
spinal cord,vascular malformation of
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