Figure legends
Figure 1. Initial magnetic resonance imaging (MRI) of the lumbar spine.
a, b) Sagittal T2-weighted MRI showing lumbar spondylosis, spinal cord edema, and flow voids around the cord at the Th11–L1 level.
Figure 2. Preoperative thoracic magnetic resonance imaging (MRI).
a) Sagittal T2-weighted MRI showing spinal cord edema and flow voids around the cord at the Th7–L1 level.
b) Sagittal T1-weighted MRI showing spinal cord edema.
c) Sagittal contrast-enhanced MRI showing heterogeneous enhancement of the spinal cord at the Th10–L1 level.
Figure 3. Preoperative computed tomography (CT) scan.
a, b) Coronal CT showing a premedullary vessel at the level of Th11/12 and a dilated premedullary drainage vein.
Figure 4.
a) Three-dimensional digital subtraction angiography (DSA) image of the right Th11 and Th12 segmental arteries showing the spinal dural arteriovenous fistula (SDAVF), intradural arterialized vein, and dilated premedullary veins.
b) Anteroposterior (AP) view DSA image of the right Th11 segmental artery showing a shunt lesion from selective catheterization of the right Th11 radicular branch with a tangle of arterialized veins noted in the central spinal canal. The fistula is noted at the right Th11 nerve sheath.
c) Posttreatment radiograph showing the presence of n-butyl-2-cyanoacrylate.
d) Posttreatment AP view DSA image of the right Th11 and Th12 segmental arteries showing the disappearance of SDAVF.
Figure 5.
a) Posttreatment sagittal T2-weighted MRI of the thoracolumbar spine showing the disappearance of edema and flow voids.
b) Coronal CT showing the presence of n-butyl-2-cyanoacrylate at the Th11/12 vertebral foramen.