Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and show minimal bibasilar opacities . The cardiomediastinal silhouette and hilar contours are normal . Pulmonary vascularity is not engorged . No pleural effusion or pneumothorax is noted .
    OUTPUT:
    
Mild bibasilar atelectasis . No evidence of pulmonary edema .