Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear although hyperexpansion is stable since ___ , reflected by flattening of the diaphragms . Cardiac silhouette is normal . There is no pleural effusion or pneumothorax . There is no pneumothorax . The blunting of the right costophrenic angle is stable .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Hyperinflation .