Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior exam , the left pigtail chest tube has been removed . There is no pneumothorax . There is minimal bibasilar atelectasis . The lungs are otherwise clear . There is no overt pulmonary edema or pleural effusion . The cardiomediastinal silhouette has an expected postoperative appearance . Sternal wires are intact .
    OUTPUT:
    
Status post left chest tube removal . No pneumothorax .