This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Aerial disorders, Subject name: Surgery
Buerger's disease affects all except:- 
Select and explain. 
A. Lymphatics, B. Small vessels, C. Nerves, D. Veins
A: Lymphatics
Answer: A: Lymphatics 
Explanation: BUERGER'S DISEASE (THOROMBOANGITIS OBLITERANS) Segmental inflammatory disease, affecting small and medium sized aeries in upper and lower extremities . Inflammatory process involves neighboring veins and nerves (not lymphatics )