Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . No focal consolidation concerning for pneumonia . There is no pneumothorax or pleural effusion . The pulmonary vasculature is not engorged and there is no evidence of pulmonary edema . The heart is enlarged , however , it is returning to preoperative appearance . Remnant epicardial leads are seen projecting over left lower lobe . Sternotomy wires are intact .
    OUTPUT:
    
Low lung volumes in an otherwise uncomplicated post - surgical chest x-ray .