Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . There is persistent enlargement of the cardiac silhouette . Mediastinal contours are stable . Right - sided PICC terminates in the low SVC without evidence of pneumothorax . A right pleural effusion persists . Right base opacity may be due to combination of pleural effusion and atelectasis with some mild pulmonary vascular congestion . Overall , pulmonary vascular congestion appears slightly improved as compared to the prior study .
    OUTPUT:
    
Persisting cardiomegaly and right pleural effusion . Mild pulmonary vascular congestion , which appears improved since the prior study .