Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post mitral valve repair and CABG . There is interval removal of the Swan - Ganz catheter . Sternotomy wires are intact . There is a dual channel pacer with leads extending into the right atrium and apex of the right ventricle . Bibasilar opacities likely reflect pleural effusion and atelectasis . There is interval improvement in pulmonary edema . Low lung volumes . No pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
1 . Interval removal of the Swan - ___ catheter . 2 . Interval improvement in pulmonary edema .