Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal cardiomediastinal silhouette . There is mild unfolding of the thoracic aorta . The lungs are clear . An azygos lobe is noted . There is no pleural effusion , vascular congestion , or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .