Poly arteritis nodosa does not involve: (A) Pulmonary artery, (B) Bronchial artery, (C) Renal artery, (D) Cerebral artery
Answer is A. Polyarteritis nodosa (PAN) is a systemic vasculitis of small or medium sized muscular arteries, typically involving renal and visceral vessels but sparing the pulmonary circulation.      
P  A  N -----
* Pulmonary  artery not involved.
*P ANCA -negative