[Panarteritis nodosa with positive Australia antigen (author's transl)].

A case of panarteritis nodosa with positive Australia antigen is presented. Panarteritis appeared following serum hepatitis and caused arthromyalgia, abdominal pain, prolonged fever of unknown origin, peripheral polyneuropathy, blood hypertension, and renal insufficiency. A muscular biopsy showed atrophy due to denervation and necrotizing arteritis in various stages causing serious damage to the arteries. Abdominal arteriography clearly demonstrated the existence of aneurismal dilations in the liver, pancreas, and kidneys. The angiographic findings in panarteritis nodose are discussed with special reference to the aneurysms localized in several organs. Their situation is described in detail; it is usually abdominal and more specifically intrarenal. The fact that they occur in a high percentage of cases is helpful when establishing the diagnosis. Lastly, the role of Australia antigen in the development of panarteritis nodose is discussed. It stimulates an immune response and the production of circulating immunocomplexes which are depostied on the vascular walls with complement fixation and damage to the blood vessels. The possibility that other viral agents may be present in the various types of necrotizing vasculitis in humans is commented on.