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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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