Figure 1: (a): Cranial MRI demonstrating pons infarction. (b): CTA of the head and neck demonstrates an aneurysm of the right proximal vertebral artery. (c and d): Selective arteriography performed using a percutaneous femoral access demonstrates a 12*14mm saccular aneurysm involving the origin of the right vertebral artery (c) and occlusion of the left vertebral artery (d). Evaluation of the intracranial vessels supplied by the right vertebral artery reveals mild stenosis of the basilar artery (e). (f and g): A 6*25mm Viabahn stent (Gore Medical, Flagstaff, Ariz) was deployed at the origin of the right vertebral artery. The arteriogram obtained immediately after stent deployment shows complete exclusion of the aneurysm and patency of the intracranial vessels (h). (i): Preinterventional duplex ultrasound shows the diameter of the right proximal vertebral artery is significantly dilated as an aneurysm, and there is plaque on the walls of the aneurysm sac. (j): Postinterventional duplex ultrasound shows the stent in the aneurysm sac, and there is a hypoechoic band between the aneurysm walls and the stent. (k): The 12-month follow-up CT scan demonstrates complete aneurysm exclusion and patency of the intracranial vessels.