Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , there has been interval enlargement of a right - sided pleural effusion which is now moderate to large with associated atelectasis . Left chest wall triple lead pacing device is again noted . There is no left - sided effusion . Linear opacity in the left lower lung is likely atelectasis versus scarring . There is vascular congestion , lungs are otherwise clear of consolidation . Previously seen pneumothorax is no longer visualized .
    OUTPUT:
    
Interval enlargement of the right pleural effusion and pulmonary vascular congestion . Please note that underlying infection at the right lung base can not be excluded .