Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated with minimal bibasilar and lingular atelectasis , left greater than right . The lungs are otherwise clear . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . No free air under the diaphragm . Visualized bowel gas pattern is nonobstructive .
    OUTPUT:
    
Low lung volumes with minimal bibasilar and lingular atelectasis . No pneumonia .