Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires are unchanged . Lung volumes remain slightly low . Mild left greater than right edema . Heart size is probably still enlarged despite lower lung volumes and AP projection . No large pleural effusion . No pneumothorax or focal consolidation . Aortic knob calcifications are mild .
    OUTPUT:
    
Findings suggestive of mild volume overload with likely asymmetrical edema pattern . Superimposed infection in the left lung can not be excluded , and short - term followup radiographs may be helpful in this regard .