Fig. 2

A In the view of the opened right atrium, a thrombus can be seen lodged at the opening of the foramen ovale (indicated by the white arrow). B A long thrombus was removed from the area of the foramen ovale. C A sketch plan of the heart vividly shows the thrombus stuck in the fossa ovalis of the interatrial septum, as well as the thrombi in the left and right pulmonary arteries. D A large number of thrombi were cleared from the left and right pulmonary arteries. LPA: left pulmonary artery, RPA: Right pulmonary artery