Takei, YusukeYusukeTakeiI-HUI WUCHIH-YANG CHANNAI-HSIN CHI2024-01-252024-01-2520232296-875Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/638921Introduction: The frozen elephant trunk technique is a surgical procedure developed for concomitant repair of downstream descending thoracic aorta as a first stage operation for arch resections. Proximalization of the sutured anastomosis reduces technical difficulty of total arch replacement. In this procedure, an anastomosis is performed more proximally using a stent graft. Connect the head and neck vessels are created using in-situ fenestration method. Case presentation: This study presents the case of a 78-year-old woman with a large thoracic aortic arch aneurysm that was successfully treated with a modified frozen elephant trunk technique (open in situ fenestration). For this method, a hole was created in the neck branches (the left subclavian artery and left common carotid artery), and peripheral stent grafts were placed to simplify neck branch reconstruction. This minimized the risk of recurrent laryngeal nerve injury and bleeding and shortened the procedure time. Conclusion: The outcomes of this study showed a safe alternative total arch replacement procedure.enfrozen elephant trunkin-situ fenestrationstent graftthoracic aortic arch aneurysmtotal arch replacement[SDGs]SDG3journal article10.3389/fsurg.2023.1224013375383912-s2.0-85166579683