Correct answer: b) Type II endoleak
When bilateral internal iliac artery embolisation is needed, it can lead to some potential complications like gluteal claudication / necrosis in severe cases, erectile dysfunction and bowel / bladder / spinal cord ischemia.
The term endoleak is used to denote leakage of blood into the aortic disease which was excluded from the blood stream by the stent graft. This could be a false lumen in case of aortic dissection or the thrombus containing aneurysm cavity outside the stent graft. Significant endoleaks can leads to progressive enlargement of the affected pathological region and even rupture.