Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . The cardiomediastinal silhouette and hilar contours are normal . Chronic right hemidiaphragm elevation is unchanged due to persistent pleural scarring at the lung base . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process . Chronic pleural scarring at the right lung base ; no indication of new pleural effusion .