Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . A pacer defibrillator is seen with leads in the expected location of the right atrium , right ventricle and coronary . The lungs are clear without focal opacity , pleural effusion or pneumothorax . The cardiac silhouette has decreased in size since ___ . There are mediastinal clips and a sternotomy ___ . There is no free air beneath the right hemidiaphragm . No acute osseous abnormality is seen .
    OUTPUT:
    
No acute cardiopulmonary process .