Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pectoral pacemaker is noted with a single intact lead . The heart is mildly enlarged . Mild central pulmonary vascular congestion is noted . Bibasilar airspace opacities likely reflect atelectasis . There is no lobar consolidation , large pleural effusion , or pneumothorax .
    OUTPUT:
    
Mild cardiomegaly and central pulmonary vascular congestion .