Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate mild pulmonary congestion . The hilar contours are unchanged . The heart is mildly enlarged . There is no pneumothorax , pleural effusion , or consolidation . The patient is status post placement of a single lead pacemaker , with the lead projecting over the expected location of the right ventricle .
    OUTPUT:
    
1 . No pneumothorax . 2 . Mild pulmonary vascular congestion .