The WBC count was 13.6 × 109/L, with differential of 65% neutrophils, 13% lymphocytes, 10% monocytes, and 5% eosinophils. The hemoglobin was 8.6 g/L, with a mean corpuscular volume of 85 femtoliters. The erythrocyte sedimentation rate was 60 mm/h. Serum chemistry, renal, liver func-tions, and urinalysis were normal. The rheumatoid factor, anti-nuclear antibody, and anti-neutrophil cytoplasmic antibody titers were negative. Results of serologic tests for a spectrum of infections were negative.