Stent-assisted coil embolization of aneurysms with small parent vessels: safety and efficacy analysis
Department of Radiology
Nervous System Diseases | Neurology | Radiology | Surgery
BACKGROUND: Stent-assisted coil embolization (SACE) is a viable therapeutic approach for wide-neck intracranial aneurysms. However, it can be technically challenging in small cerebral vessels ( < /=2 mm).
OBJECTIVE: To present our experience with stents approved for SACE in aneurysms with small parent arteries.
METHODS: All patients who underwent stent-assisted aneurysm treatment with either a Neuroform or an Enterprise stent device at our institution between June 2006 and October 2012 were identified. Additionally, we evaluated each patient's vascular risk factors, aneurysm characteristics (ruptured vs non-ruptured, incidental finding, recanalized) and follow-up angiography data.
RESULTS: A total of 41 patients with 44 aneurysms met our criteria, including 31 women and 10 men. Most of the aneurysms were located in the anterior circulation (75%). Stent placement in vessels 1.2-2 mm in diameter was successful in 93.2%. Thromboembolic complications occurred in 6 cases and vessel straightening was seen in 1 case only. Initial nearly complete to complete aneurysm obliteration was achieved in 88.6%. Six-month follow-up angiography showed coil compaction in three cases, one asymptomatic in-stent stenosis and stent occlusion. Twelve to 20-months' follow-up showed stable coil compaction in two patients compared with previous follow-up, and aneurysm recanalization in two patients. Twenty-four to 36-months' follow-up showed further coil compaction in one of these patients and aneurysm recanalization in a previous case of stable coil compaction on mid-term follow-up.
CONCLUSIONS: Our results suggest that SACE of aneurysms with small parent vessels is feasible in selected cases and shows good long-term patency rates of parent arteries.
DOI of Published Version
J Neurointerv Surg. 2016 Jun;8(6):581-5. doi: 10.1136/neurintsurg-2015-011774. Epub 2015 Jun 3. Link to article on publisher's site
Journal of neurointerventional surgery
Kuhn AL, Hou SY, Puri AS, Silva CF, Gounis MJ, Wakhloo AK. (2016). Stent-assisted coil embolization of aneurysms with small parent vessels: safety and efficacy analysis. Radiology Publications. https://doi.org/10.1136/neurintsurg-2015-011774. Retrieved from https://escholarship.umassmed.edu/radiology_pubs/164