Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . A pacer is seen overlying the left anterior chest with intact leads in appropriate position . The lungs are well expanded and clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .