Background: A 64-year-old woman presented with dilatation of the distal aortic arch secondary to chronic type B aortic dissection. Case Report: The patient underwent fenestrated thoracic endovascular aortic repair (TEVAR) for closure of the entry site, and reconstruction of the left subclavian artery with a covered stent. On the 40th postoperative day, a retrograde type A aortic dissection (RTAD) was observed on computed tomography and she underwent emergency surgery. The entry tear, related to the proximal bare metal stent, was located in front of the aortic arch. A partial aortic arch replacement was performed. Conclusion: Consideration of the risk factors of RTAD is important when performing TEVAR.

Background: A 57-year-old woman was diagnosed with Kommerell’s diverticulum in the setting of a right aortic arch on computed tomography. Case report: Although asymptomatic, the maximum diameter of the aneurysm was 55 mm; thus, she underwent surgery to prevent rupture of the aneurysm. A bypass was constructed from the left common carotid artery to the left subclavian artery. A stent-graft was deployed from the distal right subclavian artery, and coil embolization of the diverticulum was performed via the left subclavian artery. She was discharged after 12 days of surgery. The postoperative four-month follow up showed a smaller aneurysm. Conclusion: Thoracic endovascular aortic repair is feasible and effective for Kommerell’s diverticulum.

A 78-year-old woman with abnormal shadows on computed tomography CT was given a diagnosis of right-sided aortic arch and Kommerell diverticulum KD , accompanied by aberrant left subclavian artery. Although no symptoms were observed, the maximum diameter of the aneurysm was 63 mm, and surgical intervention was chosen because of the possibility of rupture. At first, a 4-branched blood vessel prosthesis with a side branch was anastomosed to the ascending aorta. Next, after reconstructing the cervical branches, a Conformable GORE ® TAG ® W.L. Gore and Associates, 34 mm 200 mm was inserted from the side branch and expanded in the range of Zones 0 to Th 7. Finally, ALSA coil embolization was performed. She was discharged on postoperative day 36, and at her 2-year follow-up, she was doing well, with shrinkage of Kommerell diverticulum.

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