Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Pulmonary edema appears improved since 1 day prior . There is a slight increase in a small right pleural effusion . Small left effusion is unchanged . No pneumothorax . The cardiac and mediastinal contours are stable .
    OUTPUT:
    
Improved pulmonary edema since 1 day prior . Slight increase in the small right pleural effusion .