Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Heart size is normal . Aorta remains tortuous . Mediastinal and hilar contours are otherwise stable . Pulmonary vasculature is normal . Streaky opacities in the lung bases are compatible with areas of atelectasis . No large pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .