Figure 11

25-year old woman involved in a rollover motor vehicle collision. On admission to the hospital, a screening four-vessel angiogram revealed a pseudoaneurysm of the left vertebral artery at the level of the C1–C2 disc space. Follow-up angiography performed 7 days later revealed enlargement of the pseudoaneurysm and concomitant narrowing of the vertebral artery. Due to the tortuosity of the vertebral artery, stent placement was not deemed a viable option and the vertebral artery was embolized. Unsubtracted image demonstrating coils placed distal and proximal to the pseudoaneurysm, trapping the diseased segment of vessel.