Antinuclear antibody (ANA) were detected positive in 3, hypocomplementemia in 5, and antineutrophil cytoplasmic antibody(ANCA) positive in 1 patient.

• 血清抗核抗体阳性 3例 ,低补体血症 5例 ,抗中性粒细胞胞浆抗体 (ANCA)阳性 1例。