Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest radiograph performed on ___ , there has been interval removal of the endotracheal tube , enteric tube , and left - sided chest tubes . Tip of the right IJ catheter terminates near the cavoatrial junction . Median sternotomy wires are intact . Lung volumes are low . Left retrocardiac opacity may represent atelectasis , although infection or aspiration should also be considered in the appropriate clinical setting . Streaky atelectasis is also present at the right lung base . Pleural effusion is small on the left . No sizable pleural effusion on the right . No pneumothorax . Stable postoperative mediastinal widening .
    OUTPUT:
    
1 . No pneumothorax status post chest tube removal . 2 . Left retrocardiac opacity may represent atelectasis , although infection or aspiration could be similar in appearance in appropriate clinical setting . 3 . Small left pleural effusion .