Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . Note is made of increased opacities at the lung bases bilaterally . There is no large pleural effusion or pneumothorax . No definite evidence of free air .
    OUTPUT:
    
No definite evidence of free air . Bibasilar opacities correlated with subsequent CT correlate with areas aspiration .