Polyaeritis nodosa does not involve:
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
Pulmonary aery
Bronchial aery
Renal aery
Cerebral aery
Vasculitis