Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . The expanded appearance of the ascending aorta and the aortic arch correlates to the known ruptured arch aneurysm of a tortuous aorta . Small left base atelectasis is similar to prior . No substantial pleural effusion or pneumothorax .
    OUTPUT:
    
Tortuous and enlarged aortic contour compatible with known ruptured aortic arch aneurysm .