Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is borderline enlarged . The aorta is tortuous and diffusely calcified . Crowding of the bronchovascular structures is noted , but no overt pulmonary edema is present . Streaky bibasilar airspace opacities may reflect atelectasis . Infection can not be completely excluded . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Low lung volumes with mild bibasilar streaky opacities which could reflect atelectasis but infection can not be completely excluded .