Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is normal size and cardiomediastinal contour is unremarkable . Calcifications are again noted in the aortic arch . Lungs are well - expanded and clear . There is no pleural effusion or pneumothorax . Bones and the upper abdomen are grossly unremarkable .
    OUTPUT:
    
No evidence of pneumonia .