Fig 2.

Giant infrasupraclinoid aneurysm of the right ICA. The patient presented with loss of vision due to mass effect (patient 13, On-line Table and Tables 1 and 2) and was treated with flow modification with transient thrombosis of the parent artery. A, DSA, right ICA injection, demonstrates bilobulated giant aneurysm (arrows). B, DSA, same view, following implantation of 2 coaxial PEDs, demonstrates partial in-stent thrombosis (arrow). C, DSA, same view, following tirofiban thrombolysis, demonstrates recanalization of the ICA (arrow) and significantly reduced flow within the aneurysm (broken arrow). D, Complete thrombosis of the ICA 2 days later. E, DSA, right vertebral artery injection, demonstrates good collateral circulation toward the right carotid system. No further action was taken at this time. F, Six-month follow-up angiogram demonstrates residual filling of the inferior portion of the aneurysm only (arrow).