Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are fully expanded and clear . Patient is status post CABG with median sternotomy wires in situ , unchanged . There is no focal consolidation , effusion , or pneumothorax . Mediastinal and hilar contours are normal . Heart size is normal . Surgical clips are noted within the left upper quadrant .
    OUTPUT:
    
No evidence of pneumonia .