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Delayed coil migration from a small wide-necked aneurysm after stent-assisted embolization: case report and
Bu-Lang Gao1, Ming-Hua Li, Yong-Li Wang
1Department of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, People's Republic of China. browngao@yahoo.com.cn
Introduction:
We present a previously unreported complication following the treatment of a patient with two small, wide-necked, posterior communicating artery aneurysms.
Methods:
Endovascular embolization of one aneurysm was performed using a stent-assisted technique. Follow-up angiography 5 months later revealed that a coil had escaped the confinement of the stent and migrated distally without occluding any arterial branches or causing symptoms. This case report demonstrates that although a rare occurrence, a coil can break loose from the stent.
Discussion:
We discuss the potential mechanisms of this phenomenon and review the literature on stent-assisted aneurysm coiling in order to raise awareness of this event when embolizing small, wide-necked aneurysms with a stent-assisted technique.
