Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are reasonably well expanded with persistent right lower lung opacity decreased in conspicuity from the previous examination , which could reflect scarring from prior pneumonia ; however , recurrent pneumonia can not be excluded . Interstitial prominence likely reflects chronic pulmonary disease . Cardiomegaly and dual - lead pacer are unchanged with extensive atherosclerotic calcification of the aorta . Trace right effusion or pleural thickening may also be present .
    OUTPUT:
    
Right lower lobar opacity could reflect scarring from prior pneumonia , though recurrent pneumonia can not be excluded .