Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate severe cardiomegaly , unchanged compared to ___ . The patient is status post aortic valve replacement . Left chest wall pacer device leads project over the right atrium and ventricle . Pulmonary edema is mild , but increased compared to ___ . There is a small left pleural effusion . There may be a trace right pleural effusion . No pneumothorax is appreciated . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Mild pulmonary edema , increased compared to ___ . Small left pleural effusion and trace right pleural effusion .