Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small left pleural effusion with overlying atelectasis . Postsurgical changes are again seen in the left upper lung . Again , there is upward retraction of the left hilum as well as the minor fissure on the right . . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Again seen small left pleural effusion with overlying atelectasis . Stable postoperative changes .