Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP semi-erect view of the chest was obtained . Heart is top normal in size . Cardiomediastinal contour is unremarkable . The sternotomy wires and surgical clips are noted . Lungs are clear without focal consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia .