Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . The lungs are again hyperinflated , with flattening of the diaphragms , suggesting chronic obstructive pulmonary disease . Subtle right upper lobe scarring is again seen . Evidence of right upper lobe blebs / bulla again seen . Ovoid calcified opacity best seen on the lateral view , projecting retrocardiac at the inferior chest measuring 1 .4 cm , may represent a calcified granuloma or node , similar to prior . Cardiac and mediastinal silhouettes are unremarkable . The aorta is somewhat tortuous . No focal consolidation or pleural effusion , or evidence of pneumothorax is seen .
    OUTPUT:
    
COPD . No acute cardiopulmonary process .