Renal granulomatous angiitis--a case report.

A case of non-necrotizing granulomatous angiitis without significant glomerular pathology is described in a 61 yr-old female. The characteristic lesion consists of periarterial inflammation comprising a mixed population of mononuclear cells with prominent giant cell formation. There is no evidence of immunoglobulin, complement or fibrin deposition. It is concluded that this represents an unusual variant of polyarteritis nodosa which is apparently controlled by steroid therapy.