GRP and neoplasm: Laboratory results were as follows: WBC count, 5.6 × 109 cells/L; eosinophil count, 0.7 × 109 cells/L (normal range: 0.02–0.52 × 109 cells/L); C-reactive protein, 4.41 mg/L (normal range: 0-3 mg/L); serum IgG level 1860 mg/dl, including 848 mg/dl of IgG4; serum immunoglobulin E level 892kU/L(normal range: less than 100 kU/L); pro-gastrin-releasing peptide (ProGRP), 72.82pg/ml (normal range: less than 69.2pg/ml), other tumor markers were negative; speckled-homogenous antinuclear antibody was positive(1:1000), rheumatoid factor and anti-cyclic citrullinated peptide antibody were negative.