Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the immediate prior study of ___ , there has been removal of a right IJ venous introduction sheath without pneumothorax , and reduction in bilateral atelectasis . The postoperative appearance of the mediastinum is resolving . There is a small to moderate right pleural effusion and small left pleural effusion . There is no focal consolidation or pulmonary edema .
    OUTPUT:
    
1 . Small to moderate right pleural effusion , small left pleural effusion . 2 . Interval improvement in postoperative mediastinal widening .