Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post CABG and aortic valve repair , with intact median sternotomy wires . Compared with ___ , there has been interval removal of a left - sided chest tube . There is no pneumothorax . A small amount of pneumomediastinum remains . There is left basilar atelectasis . An opacity at the right lung base may represent atelectasis or dependent edema . Right IJ catheter terminates in the mid SVC .
    OUTPUT:
    
1 . No pneumothorax status post chest tube removal . 2 . A right basilar opacity may represent atelectasis or dependent edema .