Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 10 :07 is submitted .
    OUTPUT:
    
Interval extubation and removal of the nasogastric tube . Lung volumes remain low with atelectasis at both bases and likely small layering effusions . No evidence of pulmonary edema . Patient is status post median sternotomy . No pneumothorax is appreciated .