Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung is well inflated , with mild hyperlucency of the upper lobes and flattening of the diaphragm , consistent with mild emphysema . Cardiomediastinal silhouette is normal . Persistent minimal right pleural effusion is unchanged since ___ . There is no pneumothorax .
    OUTPUT:
    
Mild emphysema and stable small right pleural effusion