Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Cardiac silhouette size remains borderline enlarged . The mediastinal and hilar contours are unchanged with tortuosity and calcification of the thoracic aorta again noted . The pulmonary vasculature is not engorged . Left - sided pleural thickening and pleural calcifications with parenchymal scarring in the left lung base appear relatively unchanged . No new focal consolidation is present . No right - sided pleural effusion or pneumothorax is demonstrated . Bullous emphysematous changes are again seen within the upper lobes bilaterally .
    OUTPUT:
    
No significant interval change from the previous study with no new focal consolidation identified .