Y-shaped graft replacement of an isolated innominate artery aneurysm via the transmanubrial approach.

We report the rare case of an obese woman with a 32-mm isolated innominate artery aneurysm. Due to the deep location of the aneurysm within the thoracic inlet, we selected a transmanubrial osteomuscular sparing approach to obtain a clear field of vision. During the aneurysmectomy and reconstruction with a Y-shaped graft, we performed a temporary bypass using a contralateral leg of the graft to the right common carotid artery. Through these techniques, we successfully achieved complete resection and reconstruction of the aneurysm without the need for cardiopulmonary bypass.