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FIG 4. Case 4: 69-year-old woman with a dural fistula involving bilateral cavernous sinuses.
A, CT angiogram (axial source image) shows enhancement of bilateral cavernous sinuses (double arrows) and enlarged left SOV (arrowhead ).
B, DSA (right common carotid injection, late arterial phase, anteroposterior view) shows early opacification of bilateral enlarged cavernous sinuses (arrows).
C, CT angiogram (axial source image), after partial embolization, shows partial thrombosis of left SOV (arrow ), without enhancement of left cavernous sinus (arrowheads), and persistent right enlarged cavernous sinus (asterisk ).
D, DSA (right common carotid injection, arterial phase, anteroposterior view) confirms rapid opacification of right cavernous sinus (asterisk ) and intercavernous sinus (thin arrow ), without enhancement of left cavernous sinus (thick arrow ).
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