New horizons in renal vasculitis

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Abstract
Summary After a long period during which few new data on the vasculitides emerged, the past decade has seen a real explosion of data on the subject. This began with basic clinical descriptions and the deliniation of long term outcome as survival improved to a major extent under the influence of improved treatment regimes. In parallel, better understanding of the immunopathology has emerged. Of particular interest have been descriptions of autoantibody systems in vasculitis which seem to be specific to vasculitis and therefore diagnostically useful: the antineutrophil cytoplasmic antibodies (ANCA). Whether or not these are pathogenetically significant as well as useful remains a matter for debate. In parallel, anti endothelial cell antibodies have been described, but their role (if any), in pathogenesis remains equally obscure. There are some suggestions that vasculitis is becoming more common, but increased awareness and the availability of ANCA have undoubtedly increased awareness of the subject.