FIG 4. 41-year-old woman who presented with serious headaches.

A, Right anterior oblique projection shows a fenestration associated with an upwardly projecting midbasilar artery aneurysm.

B, Immediately after GDC occlusion, right anterior oblique angiogram confirms total occlusion.

C, One-year follow-up lateral angiogram shows that the occlusion is stable.