Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , or pneumothorax is seen . The lungs are hyperinflated as seen previously , suggestive of emphysematous changes . Aortic calcification is again seen . Heart size and mediastinal contours are otherwise within normal limits .
    OUTPUT:
    
No radiographic evidence for acute process .