Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest demonstrate intact median sternotomy wires . Cardiac size is top normal . The lungs are clear with no vascular congestion or focal consolidation . No pleural abnormality is seen . No pleural effusions are seen . Hilar and mediastinal contours are within normal limits .
    OUTPUT:
    
No evidence of volume overload or infection .