Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . There is no pneumothorax or pleural effusion . Lung volumes are low , and there is bibasilar atelectasis . There is no focal consolidation concerning for pneumonia . Interstitial markings are likely accentuated by low lung volumes .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis . No pneumonia .