Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The aorta is tortuous . The heart is normal in size . Lung volumes are low . Opacities at the lung bases are most suggestive of minor associated atelectasis . Elsewhere , the lungs appear clear . There is no definite pleural effusion . There is no pneumothorax .
    OUTPUT:
    
Low lung volumes with basilar atelectasis .