Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Interval placement of a left pigtail chest tube with re-expansion of the left lung . There is a persistent left hydropneumothorax though the pneumothorax component is significantly diminished from prior . Right lung is clear . Heart size and mediastinal contours are unchanged . Bony structures are intact .
    OUTPUT:
    
Status post left pigtail chest tube placement with re-expansion of the left lung and persistent small hydropneumothorax .