Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior , the degree of pulmonary edema has slightly improved although persists . There is more dense consolidation projecting over the lower lobes best seen on the lateral view overlying the spine , potentially localizing to the left . Cardiac enlargement and hilar engorgement is again noted . Median sternotomy wires , mediastinal clips , and left chest wall dual lead pacing device are again noted . No acute osseous abnormalities .
    OUTPUT:
    
Pulmonary edema though improved since ___ . More dense consolidation projecting over the lung base on the lateral view could represent superimposed infection .