Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are unremarkable . The lung volumes are low . No focal consolidations concerning for infection are identified . Note is made of mild bibasilar atelectasis . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Mild bibasilar atelectasis . No evidence of pneumonia or pulmonary edema .