This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2017, Subject name: Pathology
[{'content': 'ANCA negative vasculitis amongst the following is \nSelect and explain. \nA. Wegner granulomatosis, B. Churg strauss syndrome, C. Polyaeritis nodosa, D. Microscopic polyangiitis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ANCA p-ANCA | MPO ANCA Churg strauss syndrome Microscopic polyangiitis c-ANCA | PR3 ANCA Wegener granulomatosis Polyaeritis nodosa: ANCA negative medium vessel vasculitis Deposition of Immune complex: Fibrinoid necrosis (Type 3 HSR) 30% of patient have history of Hep B infection HBsAg + anti-HBs ab. (complex). | Deposition in many organ Sparing of small vessel (LUNGS)', 'role': 'assistant'}]