This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
[{'content': 'Small vessel vasculitis among the following is \nSelect and explain. \nA. Takayasu disease, B. Temporal aeritis, C. PAN, D. Giant cell aeritis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Polyaeritis nodosa is a systemic vasculitis of small or medium sized muscular aeries that typically involves the renal and visceral vessels and spares the pulmonary circulation Robbins 9 th edition page no. 352', 'role': 'assistant'}]