Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to ___ 03 :26 chest radiograph , a right chest tube has been placed at the level of the sixth and seventh posterior interspace . There is mild decrease of the large right pleural effusion . The large right pneumothorax is again seen . There is slight mediastinal leftward shift unchanged from most recent study . Increased vascular markings in the left lung is consistent with a the physiologic redirection of blood flow . However the left lung is well - expanded and clear . There is a possible small left pleural effusion not seen in prior study .
    OUTPUT:
    
1 . Interval placement of a right chest tube at the level of the sixth and seventh posterior interspace 2 . There has been interval mild decrease in the large right pleural effusion . 3 . There is persistent large right pneumothorax . 4 . Possible new small left pleural effusion ; however the left lung remains well - expanded and clear .