Fig. 1 Transesophageal echocardiographic images of a long, floating thrombus (T) in the aortic arch. The stalk can be seen in the proximal aortic arch (A), and the floating end can be seen in the distal aortic arch and the descending aorta (B). The adjacent aortic wall was thickened with diffuse atherosclerosis and focal calcific plaque.