A 68-year-old, well-developed, well-nourished black male presents to the emergency department complaining of shortness of breath. He denies chest pain. He has no significant past medical history and takes no medications. A chest x-ray shows clear lung fields, mild
cardiomegaly and a widened thoracic aorta with linear calcifications. An MRI of the chest shows aortic dilatation in the thorax, ...