 spectrum lupu nephriti fifti case sle collect ten year period incid clinic pictur ln review light publish data lupu nephriti sle variabl pattern wide spectrum renal involv -dash evalu therapi prognosi conduct background lupu nephriti renal syndrom manifest sle renal involv sle common indic poor short-term prognosi peter bent brigham hospit seri sustain rais blood pressur onset renal insuffici influenc prognosi advers 