spinal dural arteriovenous fistula

spinal dural arteriovenous fistula
a common type of malformation of the vasculature in the spinal dura mater, with an artery developing a fistulous connection to a vein, resulting in venous congestion and hypoperfusion of that area of the cord. Many are idiopathic, and others are the result of trauma.

Medical dictionary. 2011.

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