Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild left base atelectasis / scarring is seen . No focal consolidation is seen . There is no large pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Mild left base atelectasis / scarring . No definite focal consolidation . Cardiac silhouette is not enlarged , similar in appearance compared to the prior study .