Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . Subtle interstitial opacities in the lung bases likely represent atelectasis . No confluent consolidation is evident . There is no pneumothorax . No pulmonary vascular congestion or effusions are identified .
    OUTPUT:
    
Minimal bibasilar atelectasis . Otherwise , no acute cardiopulmonary abnormality .