This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
All except one are features of Thromboangitis obliterans 
Select and explain. 
A. Initimal hyperplasia, B. Panarteritis, C. Vasospasmitis, D. Arterial thickening
D: Arterial thickening
Answer: D: Arterial thickening 
Explanation: Arterial Lumen is blocked but not thickened in TAO.