Figure 1:

Pretreatment magnetic resonance angiography (MRA) (a) and left internal carotid angiography (b) showing a left large paraclinoid aneurysm and agenesis of the right internal carotid artery. Angiography 2 years after the coil embolization demonstrating aneurysm recurrence (c). Angiography showing the placement of the flow diverter stent (d). Time-of-flight MRA and angiography performed after 2 years after flow diversion showing residual flow into the aneurysm, increasing gradually (e and f arrows).