Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . Incidentally noted is an azygos fissure . Cardiac silhouette is top - normal as on prior . Atherosclerotic calcifications of the thoracic aorta is noted . There is a chronic left lateral seventh rib fracture .
    OUTPUT:
    
No acute cardiopulmonary process .