Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Status post removal of a left chest tube , without evidence of a pneumothorax . A small left pleural effusion and left basilar atelectasis have improved . There is stable postoperative widening of the cardiomediastinal silhouette . Multiple median sternotomy wires and mediastinal clips relate to the recent surgery .
    OUTPUT:
    
1 . No pneumothorax after removal of left chest tube . 2 . Improving bibasilar atelectasis and left pleural effusion .