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A 71-year-old man visited our hospital with the chief complaint of back pain and was diagnosed with acute aortic dissection (Debakey type III, Stanford type B). He was found to have a variant branching pattern in which the right subclavian artery was the fourth branch of the aorta. We performed conservative management for uncomplicated Stanford type B aortic dissection, and the patient was discharged. An ulcer-like projection (ULP) was discovered during outpatient follow-up. Complicated type B aortic dissection was suspected, and we performed thoracic endovascular aortic repair (TEVAR). The aim of operative treatment was ULP closure; thus we placed two stent grafts in the descending aorta from the distal portion of the right subclavian artery. The patient was released without complications on postoperative day 5. Deliberate sizing and examination of placement location were necessary when placing the stent graft, but operative techniques allowed the procedure to be safely completed.

Treatment with Aortic Stent Graft Placement for Stanford B-Type Aortic Dissection in a Patient with an Aberrant Right Subclavian Artery