Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The heart is top - normal in size . Otherwise , the hilar and cardiomediastinal contours are normal . There is no pneumothorax . There is no pleural effusion but minimal left pleural thickening is seen . Pulmonary vascularity is normal . There is a healed fracture of the anterior left ___ rib .
    OUTPUT:
    
No acute cardiopulmonary process .