Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The ascending and descending thoracic aorta are markedly tortuous , resulting in apparent widening of the mediastinum . Left chest wall port catheter terminates at the superior cavoatrial junction . Lungs are clear aside from linear atelectasis in the right mid lung . No pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia or pulmonary edema . Markedly tortuous thoracic aorta .