RT Journal Article SR Electronic T1 pCONus Device for the Endovascular Treatment of Wide-Neck Middle Cerebral Artery Aneurysms JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A4392 A1 B. Gory A1 M. Aguilar-PĂ©rez A1 E. Pomero A1 F. Turjman A1 W. Weber A1 S. Fischer A1 H. Henkes A1 A. Biondi YR 2015 UL http://www.ajnr.org/content/early/2015/07/23/ajnr.A4392.abstract AB BACKGROUND AND PURPOSE: Endovascular treatment of bifurcation middle cerebral artery aneurysms with a wide neck could be challenging, and many lesions are still treated by a surgical approach. The pCONus is a newly emerging device for wide-neck bifurcation intracranial aneurysms. To date, a single report on the treatment of intracranial aneurysms including all locations has been published. We report our experience with pCONus in the treatment of wide-neck MCA aneurysms.MATERIALS AND METHODS: MCA aneurysms treated with pCONus in 4 European centers were retrospectively reviewed.RESULTS: Forty MCA aneurysms (mean dome size, 7.7 mm; mean neck size, 5.6 mm) were treated in 40 patients (mean age, 62 years). Aneurysm coiling was performed after deployment of 1 pCONus in 95% (38/40) of cases and after deployment of 2 pCONus devices in 5% (2/40). No procedural angiographic complications were observed. Reversible neurologic complications were noted in 5% (2/40), and permanent neurologic complication, in 2.5% (1/40) at 1 month. There was no mortality. No aneurysms bled or rebled after treatment. Immediate angiographic results were complete aneurysm occlusion in 25% (10/40), neck remnant in 47.5% (19/40), and aneurysm remnant in 27.5% (11/40). Follow-up (mean, 6.8 months) was available for 33 aneurysms (82.5%). Stable or improved results were observed in all except 3 cases, including 48.5% complete occlusions (16/33), 30.3% neck remnants (10/33), and 21.2% aneurysm remnants (7/33). There was no in-stent stenosis or jailed branch occlusion. There was no angiographic recurrence of initially totally occluded aneurysms.CONCLUSIONS: MCA aneurysms with a wide neck are amenable to treatment with pCONus.