Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are stable and within normal limits . Aortic arch calcifications are seen in unchanged orientation . The bilateral hila are unremarkable . The lungs are clear . An azygos fissure / accessory azygos lobe is noted in the right upper lung . There is no pulmonary vascular congestion . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary process .