Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is vague opacity in the lingula and possibly the right lower lobe but these areas are suspected to represent minor atelectatic change or scarring . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Hyperinflation . No definite evidence of acute disease . Streaky opacities suggesting minor scarring .