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(A) Transthoracic echocardiogram in parasternal short-axis view showing mass protruding (red arrow) and infiltrating all walls of left atrium (red arrow). (B) Apical four chamber view, showing diffuse infiltration of both atria, interatrial septum (red arrows), extending into the pulmonary vein ostium (blue arrow) with hanging mass in left atrium. (C) Parasternal long-axis view showing a pedunculated soft tissue mass in the left atrium (red arrow).
