Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are unchanged compared the prior study . Even allowing for the projection there is mild cardiomegaly . Previous median sternotomy and coronary artery bypass graft clips are noted . There is a moderate left - sided pleural effusion , unchanged in extent when compared to the prior study . There is associated left basilar atelectasis . There is persistent pulmonary vascular congestion with minimal residual pulmonary edema at the right lung base . Scarring in the left upper lobe noted . No pneumothorax seen . Postoperative changes in the left shoulder .
    OUTPUT:
    
No significant interval change when compared to the prior study .