This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vasculitis, Subject name: Pathology
[{'content': 'Polyaeritis nodosa does not involve: \nSelect and explain. \nA. Pulmonary aery, B. Bronchial aery, C. Renal aery, D. Cerebral aery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Polyaeritis nodosa (PAN) is a systemic vasculitis of small or medium-sized muscular aeries, typically involving renal and visceral vessels but sparing the pulmonary circulation. The most prominent morphologic feature of the affected aery is an area offibrinoid necrosis', 'role': 'assistant'}]