Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a left chest dual lead pacemaker , with the leads unchanged in position overlying the right atrium and ventricle , without radiographic abnormality . The cardiomediastinal silhouette is normal . The lungs demonstrate a large volume and are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Dual lead pacemaker with the leads unchanged in position overlying the right atrium and ventricle , without radiographic abnormality . A preliminary read was provided , via telephone , by ___ , MD , to ___ , NP , at ___ on ___ .