What complication of endovascular intervention is demonstrated in this study?
An endoleak is seen with contrast breaching the margin of the stent graft into the neck of the saccular aortic arch aneurysm. This is a type 3b endoleak.
CT angiography demonstrates contrast breaching the margins of the aortic stent graft into the neck of the saccular aneurysm, the lumen of which is largely thrombosed.