Endovascular Treatment of Distal Tears Located in the Reno-Visceral Segment with Bare-Metal Stents and Coils in a Complicated Type B Aortic Dissection.

The purpose of the study was to provide an endovascular strategy of treating patent reentries adjacent to visceral branches in the management of aortic dissections. A 45-year-old male who had received endovascular treatment for a type B aortic dissection was again admitted for his intermittent abdominal pain. Distal tears located in the reno-visceral segment were left untreated in the initial procedure and were thought to be related to the expansion of the false lumen during follow-up. Another endovascular surgery aiming at sealing these reentries was then performed using the concept of low-porosity flow-diverting stents and coiling technique. Postoperative angiogram revealed a significant decrease in inflow rate through the distal tears, and further computed tomography scan showed a decrease in maximum aortic diameter during the follow-up. With the assistance of coils, the low-porosity bare stents showed the potential to significantly decrease the inflow rate and accelerate the thrombosis of the false lumen. Clinical success achieved in this case study proposes an endovascular strategy in treating the reentries without disturbing the adjacent branches, while its safety and efficacy are still waiting for the verification.