Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest were taken . Bilateral metallic nipple piercings overlie the inferior aspect of the lungs on the frontal view , obscuring detail behind them . Nevertheless , the lungs are clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
No evidence of pneumonia .