Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed and compared to the prior studies . Focal opacities over the right posterior third rib are consistent with bone islands and were present since ___ . Hyperlucency of the apices with attenuation of the vessels is suggestive of emphysema . Left lower lobe atelectasis is unchanged ; otherwise , the lungs are clear without focal consolidation , pleural effusion , or pneumothorax . The aorta is tortuous and contains calcifications . Heart size is normal . Bilateral humeral head prostheses are unchanged .
    OUTPUT:
    
1 . No radiographic evidence of pneumonia . 2 . Hyperlucency of the apices with attenuation of vessels is suggestive of emphysema .