Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pneumothorax . There may be a small left pleural effusion . Streaky bibasilar opacities likely representing atelectasis or scarring are similar to the prior exam . There is no new focal consolidation concerning for pneumonia . There is no pneumoperitoneum .
    OUTPUT:
    
No acute cardiopulmonary process . Bibasilar atelectasis or scarring .