Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest ___ at 17 :47 is submitted .
    OUTPUT:
    
Interval removal of the left chest tube . A lucency along the medial left apex likely represents a tiny apical pneumothorax , which is stable if not slightly smaller than that seen on the ___ plain radiograph from 5 :04 pm . Followup imaging would be recommended . There continue be layering effusions with patchy bibasilar airspace opacities which may reflect atelectasis , although pneumonia can not be excluded . No pulmonary edema . Status post median sternotomy with overall stably enlarged cardiac and mediastinal contours .