Figure 1.

Axial (A-C) and sagittal (D) views of computed tomography angiography. Axial view of magnetic resonance angiography (E). A-C) The right cavernous sinus is distended. Dilated superior ophthalmic vein (full arrowheads) and sphenoparietal sinus (empty arrowheads) are visualized, indicating drainage veins. A,D) The origin and cisternal portion of the persistent trigeminal artery are indicated (arrows). E) The cisternal portion of the right PTA is indicated by an arrow. The origin of the PTA and fistulous point is obscured.