CT angiogram 6 months after discharge: 1 – coronal view shows absence of thrombi after pulmonary endarterectomy in right main and left inferior lobar pulmonary artery (red arrows); 2 – coronal view shows absence of thrombi after pulmonary endarterectomy in left inferior and right inferior lobar pulmonary arteries (red arrows); 3 – axial view shows right atrium (a) and right ventricle (c) remodeling after surgery compare to left atrium (b) and left ventricle (d).