Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stability of the mild right pleural effusion with the right chest tube in the same position projecting at the right lung base . Mild subcutaneous air . Stability of the small band of atelectasis at the left lung base . There is no pneumothorax , even though the apices are not totally included in this exam . The mediastinal and cardiac contours are unchanged .
    OUTPUT:
    
There is no significant change since the previous exam .