Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is an endotracheal tube terminating 3 .2 cm from the carina . There is no significant pneumothorax . Probable small left pleural effusion persists . There is improved aeration of the left lung , with residual lower lobe atelectasis . Right lung is clear . Heart size is top normal . Again seen are metallic stents in the left brachiocephalic and axillary veins . Chronic displaced right humeral neck fracture with dystrophic bridging callus .
    OUTPUT:
    
ETT in appropriate position . Improved left lower lobe atelectasis .