Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates a left chest wall pacer device with leads overlying the right atrium and ventricle , intact sternal wires , and an LVAD device projecting over the left lung base . Prominent lung markings are similar in appearance compared to ___ , increased compared to ___ . This represents mild pulmonary edema . No appreciable pleural effusion , pneumothorax , or focal consolidation . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Unchanged severe cardiomegaly . Mild pulmonary edema .