Biopsy in PAN shows:: (A) Necrotizing aeritis, (B) Atrophy, (C) Granulomatous lesion, (D) Ring lesion
Answer is A. Answer is A (Necrotizing aeritis): PAN is characterized by necrotizing vasculitis of small and medium sized muscular aeries. The vascular lesion in PAN is necrotizing inflammation of small and medium sized muscular aeries.