This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology and Rheumatology, Subject name: Medicine
Digital gangrene as shown below is seen most likely in which condition? 
Select and explain. 
A. Takayasu, B. Kawasaki, C. PAN, D. Wegener's
C: PAN
Answer: C: PAN 
Explanation: Ans. C. PANImage shows digital gangrenea. This is characteristically seen in medium vessel vasculitisb. Polyarteritis nodosa (PAN) is medium vessel vasculitis having vascular infarcts leading to gangrenec. Diagnosed by presence of P-Anca antibodies.