FIGURE 1 Preoperative imaging examination. (A) Brain CT manifested as post-infaction of cerebral lacunar with no other significant abnormalities. (B-C) Pulmonary CT angiography presented embolism in the distal of the right pulmonary artery and its branches. (D-F) Preoperative TTE showed a 13×9 mm thrombus floating in the left atrium without shunt. White arrows represent thrombus.