Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is normal . The hila are normal . The lungs are well expanded and clear . No mass or nodules . No pleural abnormalities . No pneumothorax . No fractures .
    OUTPUT:
    
Under the limit of chest radiograph , no evidence of pulmonary metastases . No acute cardiopulmonary process .