Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest at 4 :57 p .m . is compared to previous exam from earlier the same day at 4 : 10 p .m . Left - sided chest tube is seen with tip projecting over the left lung apex . Although there is increased lucency in the left hemithorax , no discrete pleural line is identified based on this supine film . There is left chest wall subcutaneous gas seen . Otherwise , there has been no change .
    OUTPUT:
    
Left - sided chest tube now seen with tip overlying the left lung apex .