Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has been extubated and a left basal chest drain has been removed . Lung volumes are slightly low with bilateral lower lobe atelectasis . No pneumothorax seen . A right - sided internal jugular catheter is in - situ , the tip is in the mid svc . Mild cardiomegaly may in part be due to the projection and in part due to low lung volumes . Similarly widening of the mediastinum may in part be due to the projection . No frank pulmonary edema seen . Interval improvement in the streaky left mid lung opacities , presumed atelectasis . Median sternotomy sutures are unchanged in appearance . Coronary artery bypass clips seen .
    OUTPUT:
    
Bibasilar atelectasis . No pneumothorax seen .