Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . A right - sided vascular stenting is seen from the region of the right brachiocephalic , subclavian , and axillary veins . Blunting of the left costophrenic angle may be due to a small left pleural effusion . No overt pulmonary edema is seen . Mild right base atelectasis was likely present . The cardiac , mediastinal , and hilar contours are stable .
    OUTPUT:
    
Possible small left pleural effusion . No pulmonary edema .