Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single lead right - sided pacemaker is again seen with lead extending to the expected position of the right ventricle . The cardiac silhouette is top - normal to mildly enlarged . The patient is status post median sternotomy and CABG . There is mild central pulmonary vascular congestion with minimal interstitial edema . No large pleural effusion is seen . There is no focal consolidation or evidence of pneumothorax .
    OUTPUT:
    
Minimal interstitial edema and top - normal to mildly enlarged cardiac silhouette .