Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Cardiac silhouette size is top normal , unchanged . Mediastinal and hilar contours are similar . AICD device is again noted with leads terminating in the right atrium ventricle . Pulmonary vasculature is not engorged . Minimal patchy bibasilar airspace opacities may reflect resolving aspiration / infection , better demonstrated on the previous CT . No new focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes noted in the lower thoracic spine .
    OUTPUT:
    
Minimal patchy bibasilar airspace opacities may reflect resolving aspiration / infection which was seen on the previous CT . No new focal consolidation .