PMC3356981_01
Magnetic resonance imaging of the patient showing hyperintensity in the upper pons and dilatation of the right superior orbital vein on (a) T2-weighted image, and good contrast enhancement after injection of gadolinium on (b) T1-weighted image
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F1
T2-weighted magnetic resonance (MR) imaging showed a hyperintense lesion on the right side of the upper pons and the right SOV was dilated [Figure 1a]. T1-weighted MR imaging of the same region showed good contrast enhancement with gadolinium [Figure 1b].
Lateral-view angiography demonstrating CS-DAVF draining into the right superior orbital vein (arrowhead) and petrosal vein (arrow), fed by dural branches of the internal and external carotid arteries
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F2
Follow-up (a) T2 and (b) post-gadolinium T1-weighted magnetic resonance images 5 months after therapy showing resolution of brainstem edema leaving with a small lacuna remaining on the right side of the pons
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F3
Follow-up MR imaging about 5 months after therapy showed resolution of brainstem edema and swelling, leaving a lacuna in the right side of the pons [Figure 3].
(a) T2 and (b) post-gadolinium T1-weighted magnetic resonance images 10 months after therapy showing complete disappearance of the lesion
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F4
We confirmed complete disappearance of the lesion on MR imaging 5 months later [Figure 4].