Polyaeritis nodosa does not involve:: (A) Pulmonary aery, (B) Bronchial aery, (C) Renal aery, (D) Cerebral aery
Answer is A. 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