Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright frontal view of the chest was obtained . The heart is of normal size with stable cardiomediastinal contours . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax . Healed posterolateral left sixth fracture similar to prior . No radiopaque foreign body .
    OUTPUT:
    
No evidence of pneumonia .