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FIG 2. Case 2: 69-year-old woman with dural cavernous fistula.
A, Frontal view of 3D CT angiogram obtained with the volume rendering technique shows an enlarged left SOV at the superior orbital fissure (single arrow ) and dilated angular veins (double arrows) bilaterally.
B, DSA (selective left external carotid injection, arterial phase, lateral view) shows rapid opacification of a portion of the cavernous sinus (single black arrow ) supplied by middle meningeal artery branches (double black arrows) and draining anteriorly into an enlarged left SOV (yellow arrow ).
C, 3D CT angiogram obtained with the volume rendering technique (superior view) shows bilateral enlarged cavernous sinuses (arrows).
D, CT angiogram (superior view) better depicts the prominent left cavernous sinus (arrows) after cutting to exclude supracavernous internal carotid artery.
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