Extravascular Migration of Thrombosed Covered Stents after Endovascular Exclusion of Splenic or Hepatic Artery Aneurysms and Pseudoaneurysms: An Underestimated Phenomenon

Endovascular treatment of visceral artery aneurysms and visceral artery pseudoaneurysms might be performed with a wide range of devices. The use of covered stents (stent graft; SG) could be a valid treatment option in which both technical success and distal flow preservation can be achieved. However, SG occlusion might be both a short- and long-term complication, especially if implanted in the tortuous vessels. Moreover, even if not extensively described, SG occlusion can result in the extravascular migration of the device, as described in only 2 case reports to date.