Wu Alex, Karuppasamy Karunakaravel, Wang Weiping
Imaging Institute, Cleveland Clinic, Cleveland, USA.
Department of Radiology, Mayo Clinic, Jacksonville, USA.
Res Cardiovasc Med. 2016 Mar 5;5(2):e32448. doi: 10.5812/cardiovascmed.32448. eCollection 2016 May.
Endoleaks remains one of the primary concerns of endovascular aortic aneurysm repair (EVAR) and is routinely followed with CT angiography (CTA). However, certain imaging findings can mimic endoleaks.
A 65-year-old woman who had endovascular aortic repair (EVAR) of an abdominal aortic aneurysm with Endologix Powerlink system developed marked new circumferential cauliflower-like bulging of contrast-filled sacs at mid-stent-graft with enlargement of the excluded aneurysm at 3-year follow-up.
Considering the unique construct of the Powerlink stents, this is thought to represent aneurysmal degeneration of the outer fabric material from the metal struts and may potentially pressurize the excluded sac with risk for rupture.
内漏仍是血管内主动脉瘤修复术（EVAR）的主要问题之一，通常通过CT血管造影（CTA）进行随访。然而，某些影像学表现可能会模仿内漏。
一名65岁女性，使用Endologix Powerlink系统对腹主动脉瘤进行了血管内主动脉修复（EVAR），在3年随访时，支架移植物中部造影剂充盈的囊出现明显的新的环形菜花状隆起，被排除的动脉瘤增大。
考虑到Powerlink支架的独特结构，这被认为代表了金属支架外织物材料的动脉瘤样退变，并可能使被排除的囊受压，有破裂风险。
