Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 lead left - sided pacer device is seen with leads extending to the expected locations of the right atrium and right ventricle . The cardiac silhouette is mildly enlarged . Mediastinal contours are stable . Mild prominence of the hila is stable . There relatively low lung volumes . Slight blunting of the bilateral posterior costophrenic angles can be seen with trace pleural effusions . No focal consolidation or pneumothorax is seen .
    OUTPUT:
    
Dual lead left - sided pacer device with leads extending to the expected positions of the right atrium and right ventricle . Low lung volumes . Possible trace pleural effusions .