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: Pathology
Onion skin spleen is seen in - 
Select and explain. 
A. ITP, B. Thalassemia, C. SLE, D. Scleroderma
C: SLE
Answer: C: SLE 
Explanation: In spleen the central peniciliary arteries show thickening and perivascular fibrosis, producing so called Onion Skin lesions.