Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and coronary artery bypass surgery . Cardiac silhouette has slightly decreased in size since the previous study , pulmonary edema has resolved . Improving aeration at both lung bases . Residual patchy retrocardiac atelectasis and bibasilar linear atelectasis remaining . Small pleural effusions are also noted .
    OUTPUT:
    
Resolution of pulmonary edema . Bibasilar atelectasis and small pleural effusions .