Endovascular Aortic Repair for Progressive Chronic Thoracoabdominal Aortic Dissections

Dissected thoracoabdominal aortic aneurysm repair with modified parallel endografting

A 67-year-old woman with a prior history of aortic dissection was admitted for enlarging the thoracoabdominal aortic aneurysm (TAAA). She has received multiple treatments including Bentall procedure, hemiarch replacement, and subsequent endovascular procedures for the closure of re-entry. Preoperative computed tomography revealed previously implanted thoracic endograft from distal arch to superior mesenteric artery with dissected TAAA measuring up to 70 mm in diameter. Re-entry was observed at bilateral common iliac arteries. The patient was successfully treated by endovascular treatment using a fenestrated stent graft to obtain a landing zone for parallel endograft technique to the iliac arteries for the closure of re-entry.

Application of a Reversed Off-the-Shelf Iliac Branched Device Stent in Revascularization of the Renal Artery Originating from the False Lumen

Fenestrated/branched endovascular aneurysm repair is a feasible and effective treatment option for patients with postdissection thoracoabdominal/abdominal aneurysm. However, this technique is cumbersome when the target vessel originates from the false lumen. We herein report our primary experiences in utilizing a reversed off-the-shelf iliac branched device (IBD) stent to reconstruct the renal artery originating from the false lumen. This technique was performed in 3 patients (all men; 49, 46, and 45 years old) in our center. After deployment of the main aortic endograft, the distal re-entry in the common iliac artery was dilated by a balloon. The off-the-shelf IBD was then reversely deployed to allow for deployment of the bridging stent graft. Finally, the IBD and the bridging stents were assembled and the IBD was connected to the main graft. No migration of the IBDs occurred, and all target vessels remained patent during follow-up. Utilization of a reversed off-the-shelf IBD for the renal artery originating from the false lumen is a feasible option, especially for patients with specific anatomical characteristics of postdissection aortic aneurysms.