Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is upper limits of normal . The mediastinal and hilar contours are remarkable for a tortuous thoracic aorta with possible component of dilation in the ascending region . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . Mild scoliosis is noted .
    OUTPUT:
    
Tortuous thoracic aorta with possible component of dilation in the ascending region . No evidence of congestive heart failure or pneumonia .