Transesophageal echocardiography is highly sensitive for diagnosing aortic injury. We report the case of a woman presenting after a motor vehicle accident in whom large aortic thrombi were identified at the aortic isthmus by transesophageal echocardiography. Aortic injury is a known cause of morbidity and mortality following chest trauma. Aortic thrombosus is a rare and life-threatening consequence of aortic trauma. In conlcusion, transesophageal echocardiography should be considered in patients who have sustained blunt aortic trauma.