Fig 2. A, A 74-year-old woman with an asymptomatic wide-neck left middle cerebral artery aneurysm (size: 10 x 10 x 12 mm; neck: 7 mm).

B, Balloon-assisted coiling (arrows) with tight filling of the aneurysm and preservation of adjacent displaced M2 branches.

C, Postembolization angiogram shows complete occlusion of the aneurysm.

D, A 22-month follow-up angiogram shows no aneurysmal recanalization or coil compaction.