Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and show a persistent right mediastinal opacity consistent with radiation fibrosis from known lung cancer treatment . A right lower lobe loculated effusion appears unchanged . The cardiomediastinal silhouette and left hilar contours are normal . No pneumothorax is present .
    OUTPUT:
    
Essentially unchanged right paramediastinal fibrosis with a loculated right lower lobe effusion .