Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Intervally , there has been placement of a pigtail left chest tube with decreasing size of left hydro pneumothorax . Right lung remains clear . A stent within the left mainstem bronchus is noted .
    OUTPUT:
    
Left chest tube placement with decreased left hydropneumothorax .