Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Both lungs are well expanded . Two small opacities superimposed on anterior end of right second rib are most likely sclerotic foci in rib , probably bone island . No opacities concerning for latent or active tuberculosis . Heart size , mediastinal and hilar contours are unremarkable . There is no pleural abnormality . Aorta is tortuous in its course but no evidence of aneurysmal dilatation .
    OUTPUT:
    
No evidence of active or latent tuberculosis .