Eustachian Valve Thrombosis

A 61-year-old man who presented with syncope for several minutes recovered spontaneously. On admission, the patient was asymptomatic, and the initial physical examination was normal. The first complementary tests (ECG, blood laboratory, chest radiography, cerebral computed tomography, and pulmonary scintigraphy) showed no abnormalities. A transthoracic echocardiogram showed a worm-like mass in the right atrium not clearly …