Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate prominent cardiac silhouette and unfolding of the thoracic aorta . A left pectoral cardiac pacer / AICD appears stable in location , with leads terminating in the right atrium and right ventricle . There is no radiographic abnormality about the pacer to account for pain . The mediastinal and hilar contours are unremarkable . The lungs are well expanded and clear . There is no pneumothorax , vascular congestion , or large effusion .
    OUTPUT:
    
No acute cardiopulmonary process . Stable appearance of left pectoral pacer / AICD .