PMC7771485_01
Time-of-flight magnetic resonance (MR) images (a) and MR angiography (b) show a venous aneurysm in the right middle cranial fossa and dural arteriovenous fistula around the aneurysm (white arrow).
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F1
Magnetic resonance (MR) imaging demonstrated varix in the right middle cranial fossa [Figure 1a and b].
(a and b) Right external carotid artery injection, frontal view. A large venous varix rapidly fills with early drainage into the superior orbital vein, left cavernous sinus, and inferior petrosal sinus. The feeding of the dural arteriovenous fistula (DAVF) through the middle meningeal artery is observed. (c) Superselective catheterization of the middle meningeal artery (MMA) shows feeding of the DAVF through the petrosal branch of the MMA.
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F2
SWL to the right facial vein through a right SOV with venous ectasia. Second, the venous drainage from the DMCV drained into the right CS and then the left CS, through the inter-CS (ICS), and into the left IPS [Figure 2a-c]. Following the introduction of the microcatheter into the SWL, superselective angiography suggested a high-flow, multichannel fistula between the right petrosal branch of the MMA and a venous aneurysm wall [Figure 2c].
(a) Venous aneurysm is completely obliterated by the coil mass. (b) Frontal view. (c) Lateral view, final right external carotid angiography showing complete obliteration of the fistula.
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F3
Complete obliteration of the venous aneurysm was achieved after the insertion of 10 coils [Figure 3a]. A final right external carotid angiography showed disappearance of the fistula [Figure 3b and c].
Time-of-flight magnetic resonance (MR) images (a) and MR angiography (b) demonstrate that the venous aneurysm and dural arteriovenous fistula disappeared after coil embolization.
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