Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The aorta is mildly tortuous . The cardiomediastinal and hilar contours are stable and within normal limits . The lungs are hyperinflated consistent with COPD . A right upper lobe nodular opacity is re - demonstrated and not significantly changed from the prior chest radiograph on ___ . Subtle bibasilar opacities are seen which may represent atelectasis , aspiration or infection . There is increased opacity at the right base , which may represent a focus of atelectasis or pneumonia . No large pleural efusion is seen . There is no evidence of pneumothorax .
    OUTPUT:
    
Lateral right basilar opacity , new from prior , could represent atelectasis , infection , aspiration . Left basilar opacity again seen , stable .