Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is improvement in the left pleural effusion , with a small amount of residual pleural fluid . There is also a small right pleural effusion . There is complete resolution of the left retrocardiac opacity visualized on the prior radiograph . The lungs are otherwise clear . Heart size is stable . The mediastinal and hilar contours are stable . The pulmonary vasculature is normal . No pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Improvement in left pleural effusion with small residual bilateral effusions .