Midterm failure after endovascular treatment of a persistent sciatic artery aneurysm.

Persistent sciatic artery (PSA) is a rare arterial embryologic malformation that tends to present early atherosclerotic degeneration such as aneurysmal formation. Open surgical treatment of PSA aneurysms has been considered as the gold standard but endovascular techniques have been recently proposed in the literature. We report the case of a 65-year-old man, diagnosed with a PSA aneurysm on peripheral thromboembolic complications. We achieved an endovascular repair with a covered stent. Despite an uneventful postoperative course, the covered stent demonstrated fracture and thrombosis 6 months after implantation without any symptoms.