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
[{'content': 'FALSE statement about polyaeritis nodosa (PAN) is: \nSelect and explain. \nA. It is a necrotizing vasculitis of small and medium-sized muscular aeries, B. Involvement of the renal and visceral aeries is characteristic., C. PAN does not involve pulmonary aeries and bronchial vessels, D. Granulomas, significant eosinophilia, and are not observed.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Polyaeritis nodosa (PAN) It is a multisystem, necrotizing vasculitis of small and medium-sized muscular aeries. Involvement of the renal and visceral aeries is characteristic. PAN does not involve pulmonary aeries, although bronchial vessels may be involved; Granulomas, significant eosinophilia, and an allergic diathesis are not observed. Ref: Harrisons principles of internal medicine, 18th edition, Page: 2794.', 'role': 'assistant'}]