Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph demonstrates stable cardiomediastinal silhouette . A right chest dual lead pacing device is noted , of leads which appear intact and in unchanged position . Relative to most recent examination , opacity within the right lung base appears more confluent . There has been progression of pulmonary vascular congestion . No new confluent consolidation identified on the left . There persists blunting of the right costophrenic angle consistent with a small pleural effusion . There is no pneumothorax .
    OUTPUT:
    
Worsening vascular congestion with developing more confluent right lung base opacity , potentially due to blossoming infection or progressive atelectasis although asymmetric edema is possible .