Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph , there has been improvement in pulmonary edema . A small right pleural effusion is mostly resolved . There is some scarring seen at the right base . Cardiomediastinal silhouette is slightly enlarged but unchanged . There is no focal consolidation or pneumothorax . Right dialysis catheter is seen , unchanged in position .
    OUTPUT:
    
Interval improvement in pulmonary edema and small right pleural effusion .