Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is a focal area of increased density at the left lower lung which is likely related to prior scarring . The lungs are otherwise clear and there is no evidence of an acute infection . There are no focal consolidations , pleural effusions or pneumothorax .
    OUTPUT:
    
No radiographic evidence of an acute cardiopulmonary process .