Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead left pectoral pacemaker device is unchanged in position . Replaced aortic valve is unchanged in position . Median sternotomy wires are unchanged . Bilateral interstitial opacities are new from ___ , favored to be edema and given the short interval time course of development . However concurrent pneumonia can not be excluded in the appropriate clinical situation . The heart remains enlarged . The mediastinum is not widened . Aortic knob calcifications are mild . Slight blunting of right costophrenic angle could be a trace pleural effusion . No pneumothorax . Degenerative changes in the bilateral AC joints are moderate .
    OUTPUT:
    
New interstitial opacities most likely edema in the setting of mild cardiomegaly and trace right pleural effusion ; however , concurrent infection can not be excluded . Close attention on follow - up .