Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs remain hyperinflated . There is subtle blunting of the posterior costophrenic angles were likely due to mild atelectasis rather than trace pleural effusions . No large pleural effusion is seen . There is no evidence of pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Mild basilar atelectasis .