Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The adjusting for changes in position , there appears to be a new right lower lung opacity . Increasing left pleural effusions likely still present but is now layering on this portable film . No pneumothorax . Cardiomediastinum is relatively unchanged adjusting for changes in position .
    OUTPUT:
    
New right lower lung opacity concerning for pneumonia , however could be atelectasis .