Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The previously described right middle / lower lobe opacity has improved , suggesting that it is a pneumonia or atelectasis . The cardiomediastinal and hilar contours are normal . No pleural effusion or pneumothorax .
    OUTPUT:
    
Improvement in the previously described right middle / lower lobe opacity , suggesting it is an pneumonia or atelectasis . A CT is not recommended at this time . However , if symptoms persist , then followup in 8 weeks could be obtained .