Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the most recent prior radiograph , the left pleural effusion has improved , with a persistent small residual effusion . There is unchanged appearance of a moderate right pleural effusion . Right mid and bilateral lower lung linear opacities are consistent with scarring . Calcified pleural plaques are unchanged . The heart size is unchanged . Widening of the right peritracheal stripe and prominence of the right hila are consistent with lymphadenopathy seen on previous PET - CT . There is no pneumothorax .
    OUTPUT:
    
Improvement in small left pleural effusion ; no change in moderate right effusion .