Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the immediate prior study of ___ , mild pulmonary vascular congestion and subsegmental atelectasis has resolved . Postoperative appearance of the mediastinum continues to improve . There is stable moderate cardiomegaly . There may be a small left pleural effusion . The right IJ CVC catheter tip ends in the right atrium . There is no focal consolidation pneumothorax , or pulmonary edema .
    OUTPUT:
    
1 . Interval resolution of mild pulmonary vascular congestion and subsegmental atelectasis . 2 . Possible small left pleural effusion .