Evaluation of mass located in main pulmonary artery and bifurcation of pulmonary artery with echocardiography. a, b Transthoracic echocardiography: a 43.7 mm × 15.9 mm solid echo-level mass which attached to paries lateralis of the main and bifurcation of pulmonary artery. c Color Doppler. No significant blood flow was seen in the left pulmonary artery, whereas partial blood flow passed in right pulmonary artery. d Ultrasonic spectroscopy: the turbulent flow passed the mass
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