Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest ___ at 13 :25 is submitted .
    OUTPUT:
    
Extensive postoperative changes of the left hemithorax with similar appearance to that on prior studies . Stable partially loculated left pleural effusion . The right lung remains well inflated and clear . Overall cardiac and mediastinal contours are stable status post median sternotomy . No pneumothorax . Left subclavian arterial stent remains in place .