Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior chest radiograph , lung volumes are slightly lower . The heart size is top normal . No pleural effusion , focal consolidation , or pneumothorax . The aortic annulus is calcified , but not heavily . Left - sided pacemaker leads are unchanged in position .
    OUTPUT:
    
No focal consolidation concerning for pneumonia .