Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dual - lead pacemaker / ICD appears unchanged with leads terminating in the right atrium and ventricle , respectively . The heart is normal in size . There is increase in right infrahilar opacity probably correlating with focal right lower lobe opacity . This is superimposed on a probably more chronic interstitial abnormality at the lung bases , which is greater on the right than left . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Right lower lobe opacity suggesting pneumonia or aspiration . Suspected moderate interstitial disease at the lung bases . Follow - up radiographs are recommended .