Figure 1. Retreatment with a second stent assisted coiling was performed for recurrent intracranial VADA after SAC.

A 43-year old male presented with severe headache. CT scan showed subarachnoid hemorrhage and intraventricular hemorrhage (A). MR imaging showed intramural hematoma (B). Right vertebral angiograms of oblique view showed a dissecting aneurysm involving PICA (C). SAC were performed with near complete occlusion (D). Follow up angiography after eight months revealed regrowth of dissecting aneurysm on the opposite side and in a different location from the original dissecting aneurysm (black arrow) (E). Retreatment by SAC (white arrows) (F) was performed with complete occlusion (G). Follow up angiography after ten months of retreatment showed not only complete occlusion of dissecting aneurysm, but also patency of parent artery (H).