Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single frontal image of the chest demonstrates a moderate - to - large left pleural effusion unchanged since previous imaging . A right lower lobe opacity is seen which is also unchanged since previous imaging . Pulmonary vessels are better defined and less engorged than on previous imaging , suggesting resolving interstitial edema . Again seen is significant cardiomegaly . A pacer is seen with leads following the expected course to the right atrium and right ventricle . Calcification of the pleura at the right lung base is consistent with asbestos exposure , and given the persistent left pleural effusion without known source , a possible mesothelioma would need to be ruled out .
    OUTPUT:
    
Persistent moderate - to - large left pleural effusion , unchanged from previous imaging . Right lower lobe opacity unchanged from previous imaging . Significant cardiomegaly . Asbestos - related pleural calcifications .