Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film , the left - sided chest tube has been removed . Again seen is the superiorly convex contour , with some associated density , abutting the left hilum in the region of the chain sutures . The degree of associated opacity has improved . This is not clearly a pneumothorax margin , as vessels project beyond it , though it is difficult to exclude some form of loculated pneumothorax in this setting . The density has been postulated to represent hemorrhage at the site of the chain sutures , but is not fully characterized on the basis of this exam . Otherwise , there appears to been some interval clearing of atelectasis at the left lung base . Minimal stranding at both bases remains present , as does slight tenting of the left hemidiaphragm . The right lung is otherwise without focal infiltrate or gross effusion . The minimally displaced fracture of the right ninth rib Lat is unchanged compared with a preop film dated ___ and probably unchanged compared with in chest x-ray from ___ . The cardiomediastinal silhouette may be very slightly smaller . Doubt CHF .
    OUTPUT:
    
1 . Interval removal of left chest tube . 2 . No definite change in left - sided pneumothorax . Rounded contour in the left upper zone again seen . If clinically indicated , a lateral chest x-ray view may help to further characterize this finding . 3 . Slight interval improvement left base atelectasis . 4 . Otherwise , it I doubt significant interval change . 5 . Nonacute right ninth rib fracture again noted .