Syncope due to right atrial thromboembolism: diagnostic importance of two-dimensional echocardiography.

Recurrent syncopes due to acute circulatory failure occurred in a 40-years-old female with a massive right atrial thromboembolus which was detected by two-dimensional echocardiography (2 DE), and subsequently surgically removed. 2 DE is an excellent and rapid screening technique for the patients with right sided intracardiac masses. The use of 2 DE should be considered for patients with unclear syncopes e.g. postoperatively, following deep venous thrombosis or in cases resembling "hyperventilation syndrome".