FIG 2. Case 8.

A, Pretreatment lateral carotid angiography shows a broad-necked superior hypophyseal aneurysm of the right internal carotid artery.

B, Stent delivery system is advanced distal to the aneurysm over microguidewire. Distal marker of the stent delivery catheter, proximal and distal markers of the stent itself within the catheter are visible.

C, Lateral fluoroscopic view shows the stent in the cavernous internal carotid artery, covering the orifice of the aneurysm.

D, Late arterial phase of lateral carotid angiography obtained after the stent deployment shows contrast extravasation, which is confirmed by CT (E) also. F and G, The second session of embolization performed 3 weeks later failed because of the persistent protrusion of the coils into the internal carotid artery.