Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are slightly low . There is bilateral lower lung atelectasis . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . Mild elevation of the right hemidiaphragm is not significantly changed .
    OUTPUT:
    
Minimal bibasilar atelectasis . Otherwise , no acute cardiac ___ pulmonary findings . This study does not suggest ___ exclude the possibility of pulmonary embolism .