Transesophageal echocardiography (TEE) is now commonly used to evaluate the
thoracic aorta, because it is widely available and provides high-resolutio
n images and flow information by Doppler. This article reviews the essentia
l features on TEE of acute and chronic aortic diseases, such as aortic diss
ection, aneurysm, and atherosclerosis, and discusses its strengths, weaknes
ses, and indications.