Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Left - sided pacemaker device is noted with leads terminating in the right atrium and right ventricle . Mild to moderate enlargement of the cardiac silhouette persists . Aorta is tortuous and diffusely calcified . Pulmonary vascularity is not engorged . 12 mm nodular opacity within the left mid lung field appears unchanged compared to the prior study , and could reflect a vessel on end or granuloma . Lungs are otherwise clear of consolidation . No pleural effusion or pneumothorax is visualized . No acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .