Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is mildly tortuous . The pulmonary vascularity is not engorged . Lung volumes are slightly low which accentuates the bronchovascular markings . Minimal patchy opacities in the lung bases could reflect atelectasis . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are identified .
    OUTPUT:
    
Low lung volumes with minimal patchy bibasilar opacities likely reflecting atelectasis .