Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph performed yesterday afternoon , the lungs are significantly better aerated . Bilateral pleural effusions have improved , but there is persistent left greater than right effusions . Bibasilar opacities are unchanged . No pneumothorax . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Improving aeration of bilateral lungs . Bilateral pleural effusions , left greater than right , have significantly improved .