Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post previous median sternotomy and coronary artery bypass surgery . Heart is upper limits of normal in size and similar to the prior radiograph . Aorta is tortuous and calcified . Extensive calcifications are present along the lateral left pleural surface contiguous with pleural thickening at the left lateral costophrenic sulcus and adjacent left hemidiaphragm . Adjacent regions of parenchymal scarring are present , also appearing similar . Bilateral upper lobe predominant bullous emphysema is noted , unchanged . No acute skeletal findings .
    OUTPUT:
    
Stable radiographic appearance of the chest with no new or progressive lung or pleural abnormalities .