Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are slightly hyperinflated with increased AP diameter . A large bulla is seen in the right apex . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal .
    OUTPUT:
    
1 . No pneumonia . 2 . Hyperinflation with right upper lobe bulla suggests emphysema .