Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable with normal heart size . There is no pneumothorax or large pleural effusion . The lungs are well expanded with relative paucity of pulmonary markings at the apices consistent with emphysema . Patchy opacity at the right lung base is slightly improved but not completely resolved in may indicate superimposed infection or aspiration . There is no pneumoperitoneum . Mildly displaced right posterior rib fracture is better assessed on recent CT . Comparison to the prior outside hospital CT shows a nodular opacity at the right lower lobe measuring 2 .3 x 1 .4 cm ( series 5 a , image ___ ) . An ascending aortic aneurysm measuring up to 5 .5 cm is present . Coronary artery disease is severe .
    OUTPUT:
    
1 . Interval worsening of right base patchy opacity , consistent with infection or aspiration . 2 . Nodular opacity at the right lung base on recent CT , which may reflect pneumonia or aspiration . However , lung cancer is a possibility . 3 . Ascending aortic aneurysm measuring up to 5 .5 cm .