Fig. 8.

Acute thrombosis of a PED deployed within two previously implanted self-expanding stents. Dissecting, partially thrombosed aneurysm of the right M1 segment (a). An Enterprise and a Solitaire stent were coaxially deployed to enforce the vessel wall and to redirect blood flow in June 2009. Follow-up DSA showed further but incomplete thrombosis of the aneurysm (b). Two PEDs [2.5 × 20, 2.5 × 18] were deployed within the two stents (c). Despite dual antiplatelet antiaggregation, acute thrombosis of PED and stents occurred 5 days later with significant MCA ischemia but without a neurological deficit (d, e)