Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are small bilateral pleural effusions , which have improved since ___ . There are no new areas of focal consolidation . No pulmonary edema or pneumothorax . The mediastinum , hila and heart are within normal limits .
    OUTPUT:
    
Small bilateral pleural effusions have significantly improved since ___ . No new pulmonary nodules or masses .