Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate no relative changes when compared to prior radiograph . Unchanged bilateral pleural effusions with subsequent areas of atelectasis . There is moderate cardiomegaly with stable appearing mediastinal contour . Sternal wires and mediastinal postoperative clips are noted in unchanged in position . There are no new parenchymal opacities . There is no pulmonary edema . No pneumothorax .
    OUTPUT:
    
No significant interval changes .