Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is perihilar haziness with moderate pulmonary edema , new compared to the prior study . Small right pleural effusion is present . The heart size is mildly enlarged . Mediastinal contours are unchanged . No pneumothorax is seen .
    OUTPUT:
    
Moderate congestive heart failure and small right pleural effusion .