Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is an opacity at the base of the right lung which has worsened since the prior study is concerning for atelectasis and likely supervening infection . The cardiomediastinal silhouette and hilar contours are normal . The pleural surfaces are normal without effusion or pneumothorax .
    OUTPUT:
    
Worsening right base opacity concerning for pneumonia .