List five features seen on angiographic examination of patients with Takyasu's arteritis?

1. Smooth segmental narrowing
2. Marked irregularity of the aorta (resembling severe atherosclerotic disease)
3. Stenosis or occlusion of the aorta and branch vessels (brachiocephalic vessels involved most often)
4. Thickened aortic wall
5. Aneurysms