FIG 3. Case 3: 54-year-old woman with dural CCF and right exophthalmos, chemosis, and dilated episcleral vessels.

A, CT angiogram (axial source image) shows an enlarged right cavernous sinus with irregular wall (yellow arrows) and large ipsilateral basilar plexus (asterisk ). White arrows indicate vertebral arteries.

B and C, Superolateral (B ) and posterior (C ) views of 3D CT angiogram obtained with the volume rendering technique show inferior petrosal sinuses along the posterior surface of the petrous bone (yellow arrows). Note the good delineation of skull and vascular anatomy. Asterisk indicates basilar plexus; white arrows, vertebral arteries.

D–F, Superolateral view of 3D CT angiogram obtained with the volume rendering technique (D ) shows enlarged cavernous sinus (yellow arrow ). Small vessels (blue arrows) might correspond to arteriovenous shunts, well depicted by lateral selective internal maxillary injection on DSA (E ). CT angiogram (axial source image) after superselective intraarterial embolization shows n-butyl cyanoacrylate in these arterial feeders (F ).