Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are unchanged . Moderate right pleural effusion is similar in size compared to the prior study with associated right basilar opacity , which may reflect compressive atelectasis . There is minimal streaky left basilar atelectasis . Mild pulmonary vascular congestion is improved compared to the previous study . No pneumothorax is identified .
    OUTPUT:
    
Persistent moderate to large right pleural effusion with right basilar opacity , likely compressive atelectasis . Minimal streaky left basilar atelectasis . Improving mild pulmonary vascular congestion .