Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are unremarkable , except for a mildly tortuous thoracic aorta . Lungs are well - expanded and clear except for linear left basal atelectasis / scarring , stable since the prior study . No pleural effusion or pneumothorax is seen . There is no evidence of pulmonary edema .
    OUTPUT:
    
No acute cardiopulmonary pathology .