Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . The cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . Lungs are hyperinflated with flattening of the diaphragms , findings compatible with COPD . Pulmonary vasculature is not engorged . Minimal atelectasis is seen in the right lung base with tenting of the diaphragm . No pneumothorax or pleural effusion is demonstrated . Diffuse idiopathic skeletal hyperostosis is noted within the imaged thoracic spine . Remote left - sided rib fractures are also noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality . COPD .