Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A moderate to large right pleural effusion layers on the current exam which accounts for the hazy opacity overlying the right upper and mid lung fields . Small left pleural effusion is relatively unchanged . Assessment of the cardiac silhouette size is difficult given the presence of bilateral pleural effusions . Mediastinal contour is unchanged . No pulmonary edema is visualized . Bibasilar airspace opacities likely reflect compressive atelectasis . No pneumothorax is identified .
    OUTPUT:
    
No substantial interval change compared to the previous studies from earlier today . Moderate to large layering right pleural effusion and small left pleural effusion with compressive bibasilar atelectasis .