Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal in size . The hilar and mediastinal contours are within normal limits . Lungs are well expanded and clear . There is no focal consolidation , pleural effusion or pneumothorax . Sternotomy wires appear grossly intact . Chronic bony changes are noted in the left ribs .
    OUTPUT:
    
No acute cardiopulmonary process .