Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . There is no pulmonary edema . Cardiac silhouette is top normal to mildly enlarged . Mediastinal and hilar contours are unremarkable . There is no pneumothorax or pleural effusion . The pacer is seen overlying the left anterior chest with intact lead in appropriate position .
    OUTPUT:
    
No acute cardiopulmonary process .