Polyarteritis nodosa presenting with necrotising appendicitis and hepatic aneurysm rupture.

Polyarteritis nodosa is a necrotizing vasculitis which affects small and medium-sized arteries. The clinical features of the disease vary according to the site and extent of involvement. Aneurysmal dilatation and thrombosis in the arteries of the liver and gastrointestinal tract have been reported in polyarteritis nodosa.