Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . The patient is status post median sternotomy and CABG . Dual - lead left - sided pacemaker is stable in position , with leads extending to the expected positions of the right atrium and right ventricle . The cardiac silhouette is stably enlarged . Mediastinal contours are stable . There is no focal consolidation , pleural effusion or evidence of pneumothorax . No overt pulmonary edema is seen .
    OUTPUT:
    
No acute cardiopulmonary process . Persistent enlargement of the cardiac silhouette .