An 82-year-old man underwent total aortic arch replacement with a 24 mm Triplex four-branched graft for aortic arch aneurysm. After two years, he was diagnosed with pseudoaneurysms due to bleeding from a non-anastomotic site of the branch graft to the left common carotid artery and minor leakage from a distal anastomotic site of the main graft. A self-expandable Fluency covered stent and cTAG thoracic endograft were used for the aneurysm. After four years, he was referred to our hospital with a complaint of pulsatile swelling of the anterior chest wall. Contrast enhanced computed tomography (CT) revealed a pseudoaneurysm arising from a non-anastomotic site of the branch graft to the left common carotid artery, which extended into the anterior chest wall and the skin through the sternum. He underwent emergency endovascular repair using a Niti-S ComVi covered stent. The postoperative course was uneventful. Postoperative CT showed shrinkage of the pseudoaneurysm. The patient was discharged and required no reintervention during the follow-up.
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