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 stable . There is no pleural effusion or pneumothorax . Patient is status post right mastectomy . Old healed rib fractures are noted on the right .
    OUTPUT:
    
No acute cardiopulmonary process .