Open stent grafting is an alternative of graft replacement and thoracic endovascular aortic repair for aortic arch aneurysm. We have performed open stent grafting with half sternotomy (mini-OSG) to reduce inhospital stay and recovery time of patients and herein report seven cases of mini-OSG for aortic aneurysm and dissection. Case presentation: The patients' mean age was 66 years. Cardiopulmonary bypass was performed conventionally, and an open stent graft was inserted via an aortotomy on the

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... ortic arch during circulatory arrest. No mortality occurred. The mean operation time was 387 min, and the mean blood loss was 587 ml. The patients were weaned from the ventilator 7.1 h postoperatively. No pseudoaneurysm or endoleakage was observed during the 2-to 20-month follow-up. Conclusions: Mini-OSG might be less invasive, although further studies and intensive follow-up are needed.