Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . Subtle bibasilar opacities most likely reflect subsegmental atelectasis . There is mild vascular congestion without frank edema . No focal consolidation , pleural effusion or pneumothorax is identified .
    OUTPUT:
    
Subtle bibasilar opacities most likely represent minimal subsegmental atelectasis however infection should be considered in the appropriate setting . Mild vascular congestion without frank edema .