Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval removal of the left chest tube . A trace left apical and left medial pneumothorax are present . Again noted are low bilateral lung volumes with slight decrease in the extent of the bibasilar opacities . A small left pleural effusion is again visualized . The known left rib fractures were better assessed on prior studies .
    OUTPUT:
    
Interval removal of the left chest tube . A trace left apical and medial pneumothorax persists . Small left pleural effusion persists with interval decrease in the extent of the bibasilar atelectasis .