Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the most recent chest radiograph , the pleural effusions have resolved . Previously noted bibasilar airspace opacities have nearly resolved , though a hazy linear opacity at the right base adjacent to the right heart border does not obscure the heart border or diaphragm and likely represents small amount of atelectasis . Linear opacities in the left lung base are also similar , likely scarring or atelectasis . There is no dense consolidation , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is normal . A mechanical aortic valve is visualized . Sternal wires are intact . Underlying emphysema is unchanged . Soft tissue anchors in the right shoulder are re-demonstrated .
    OUTPUT:
    
Previously noted bibasilar airspace opacities have nearly resolved , with residual mild right basilar opacity , likely atelectasis , though infection is not completely excluded . Previously noted bilateral effusions have also resolved .