Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to prior same - day chest x-ray from ___ at 10 :36 , there has been interval enlargement of the left - sided pneumothorax , status post water seal of pigtail catheter . Again visible are apical and superolateral components of the pneumothorax , similar , but slightly increased in size . There is has been re-appearance of a sizable anterior / retro - sternal component seen on lateral view -- this is similar in size and appearance to previous chest x-ray from ___ at 17 :59 , but increased compared with the film obtained earlier today . The hydro pneumo thorax component seen posteriorly on the lateral view is fairly similar to the most recent prior film . Bilateral pleural effusions are unchanged . No shift of mediastinal structures . No additional significant interval changes . Minimal atelectasis in the right cardiophrenic region again noted .
    OUTPUT:
    
Interval reaccumulation of the left - sided pneumothorax , detailed above . Interval change is most striking in relation to the anterior component of the pneumothorax , seen behind the sternum on the lateral view .