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