Fig. 2

Clinical course and the sequential determination of MPO-ANCA. The first renal biopsy was performed five days after admission, and the second renal biopsy was performed 31 days after admission. On day 40 after admission, the patient received an initial 25 mg/day (0.6 mg/kg) PSL dose orally. As a result, her s-Cr decreased gradually. One year later, she was receiving 7.5 mg/day PSL dose, and her s-Cr has been stable around the level of 1.1 mg/dL. PSL, prednisolone; s-Cr, serum creatinine concentration; MPO-ANCA, myeloperoxidase-antineutrophil cytoplasmic antibody