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': "All of the following condition are associated with granulomatous pathology, except - \nSelect and explain. \nA. Wegener's granulomatosis (WG), B. Takayasu arteritis (TA), C. Polyarteritis nodosa (Classic PAN), D. Giant cell arteritis (GCA)", 'role': 'user'}, {'content': 'Answer: C \nExplanation: The hepatitis B surface antigen\xa0is present in 25% of patients\xa0with Polyarteritis\xa0Nodosa.\nHepatitis B antibody\xa0is present in patients\xa0with essential\xa0mixed cryoglobinuria and rarely in patients\xa0with\xa0poly arteritis nodosa.', 'role': 'assistant'}]