Eight patients with spinal epidural arteriovenous malformations presen
ted with progressive myelopathy (3), hemorrhage (3), and tinnitus/brui
ts (2). MRI suggested a vascular malformation in four (of seven) patie
nts. Spinal angiography was necessary for diagnosis. Treatment by endo
vascular embolic occlusion (with balloons, particles, or coils) (7 pat
ients) or surgical resection (4 patients), or both, temporarily arrest
ed progression of neurologic symptoms, but recurrence of symptoms in t
wo patients was associated with development of collateral arterial sup
ply to the malformation.