Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Nodular opacities projecting over the lung bases which could be nipple shadows . Lungs are otherwise clear without consolidation , effusion , or pneumothorax . Cardiac silhouette is top - normal . There is tortuosity of the descending thoracic aorta . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Bibasilar nodules which are probable nipple shadows