Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiovascular congestion and pulmonary edema are perhaps slightly improved compared to the prior exam when accounting for differences in technique . The cardiac silhouette remains enlarged . In particular , the left atrium , left main pulmonary artery , and right atrium remain prominent and are probably not appreciably changed . No focal consolidation , pleural effusion , or pneumothorax . The replaced mitral valve as well as median sternotomy wires and surgical clips projecting over the mid trachea appear intact and unchanged in position .
    OUTPUT:
    
Mild cardiovascular congestion / pulmonary edema and moderate cardiomegaly , perhaps slightly improved since the prior exam .