Question 9 - Single Best Answer
Which of the following is the most likely diagnosis?
C) Thoracic aortic aneurysm
CORRECT!
The differential diagnosis of a widened superior mediastinum includes an aortic aneurysm and a lung mass such as a lung cancer. You can differentiate an aneurysm from a lung cancer by obtaining a CT scan of the chest. Aortic aneurysms can occur at any level in the thoracic aortic but are most characteristic in the aortic arch.