Abstract
Most traumatic carotid artery aneurysms occur at or close to its bifurcation, and traumatic aneurysm of the intrathoracic carotid arteries are rare. We describe a case of false aneurysm at the origin of the left common carotid artery (LCCA) after blunt trauma. A 53-year-old man suffered a blow from a broken steel plate, which flew from a working concrete crusher over his neck when he looked down the machine. Chest computed tomography revealed aneurysm of the LCCA, and aortic arch arteriography demonstrated a false aneurysm of about 3 x 5 cm at the origin of the LCCA, with loss of arterial continuity and abnormal tortuosity above the aneurysm. An ascending aorta to LCCA bypass graft was placed during the cooling period of cardiopulmonary bypass, and mattress sutures were placed in the normal aorta to close the origin of the LCCA under hypothermic circulatory arrest because of the extreme danger of dissection. The LCCA was transected partially at its origin from the aorta. We speculated that the direct lifting force which caused the carotid artery to move upward might produce a tear at the junction of the LCCA and the aortic arch.
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