Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is top - normal in size . The mediastinal and hilar contours are normal and not significantly changed since prior examination . As compared to prior chest radiograph , there has been interval resolution of right lower lung opacity and pleural fluid . Atelectasis and probable small pleural effusion still remains . No pneumothorax identified .
    OUTPUT:
    
Interval improvement of right lower lung opacity , with probable residual atelectasis and small pleural effusion . No new focal abnormalities to suggest pneumonia identified .