Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . The heart is moderate to severely enlarged with a prior coronary artery bypass graft surgery . The patient is status post right upper lobectomy with associated unchanged volume loss in the right hemithorax . There is a suspected increased degree of right basilar opacification , probably primarily due to a further increase in pleural effusion . Opacity at the right lung base can probably be attributed to atelectasis associated with effusion . Patchy opacities in the right lung have otherwise improved , however . There is a very small suspected new pleural effusion on the left .
    OUTPUT:
    
Suspected increase in right pleural effusion ; improvement in parenchymal opacities , however .