Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The ET and enteric tubes remain in satisfactory position . Right upper lobe pneumonia is re - demonstrated . Retrocardiac airspace opacification has increased . There is no pneumothorax . A trace left pleural effusion is unchanged .
    OUTPUT:
    
Right upper lobe pneumonia with increased retrocardiac airspace opacification which is most likely due to atelectasis , and less likely to infection or aspiration . Stable trace left pleural effusion .