[Ascending Aortic Thrombus Recognized by Acute Brachial Arterial Occlusion].

We report a case of ascending aortic thrombus with acute arterial occlusion of the brachial artery. A 49-year-old woman had sudden pain in her right arm due to acute occlusion of the right brachial artery. Contrast-enhanced computed tomography and echocardiography revealed a large mobile thrombus in the ascending aorta, which prompted surgical intervention. The thrombi were removed via aortotomy under circulatory arrest. Trans-esophageal echocardiography was useful for watching a potential detachment of the thrombus in the aorta during surgical manipulations or systemic perfusion. Despite no evidence of either inherited or acquired thrombotic predisposition, thrombosis in the right atrium and deep veins of the lower extremities was found postoperatively. Since antiplatelet and anticoagulant therapy was started, she has suffered from no thrombotic event.