Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is chronic opacity at the right base . Opacities at the left base are also similar and may reflect atelectasis . Moderate cardiomegaly is unchanged . The mediastinal and hilar contours are normal . Median sternotomy wires appear intact . There is no large pleural effusion or pneumothorax on this single frontal projection . Slight prominence of interstitial markings may reflect mild pulmonary edema .
    OUTPUT:
    
1 . Stable moderate cardiomegaly with possible mild pulmonary edema . 2 . Chronic bibasilar opacities . No definite evidence of pneumonia .