Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires appear intact and appropriately aligned . Low lung volumes . The left basilar atelectasis has improved , with a small residual pleural effusion . Linear opacities at the right base representing new atelectasis . Stable appearance of the postoperative cardiomediastinal silhouette . The pulmonary vasculature is normal . No pneumothorax is seen .
    OUTPUT:
    
1 . No pneumothorax . 2 . Improved left basilar atelectasis , with new right basilar atelectasis . 3 . Small left pleural effusion .