Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided chest tube with pigtail projecting over the left lateral upper hemithorax is in unchanged position . Small left hydropneumothorax is unchanged . Minimal atelectasis is noted in the left lung base , similar to that seen previously . Cardiac and mediastinal contours are normal . Pulmonary vasculature is normal . Right lung is clear . No acute osseous abnormalities present .
    OUTPUT:
    
No change in small left hydropneumothorax status post chest tube placement .