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
Which of the following is only vascular disease with panarteritis where internal elastic lamina is preserved 
Select and explain. 
A. Buerger's disease, B. Takayasu arteritis, C. Raynaud's disease, D. Churg Strauss syndrome
A: Buerger's disease
Answer: A: Buerger's disease 
Explanation: Buerger's disease is only panarteritis where internal elastic lamina is preserved.