CXCL13 and lobular neoplasia: Serum CXCL13 levels in the LN patients with class 2 ELT were significantly higher than those of the LN patients with class 0 and 1 ELT (class 0: 180.96 [101.93–218.88] pg/mL; class 1: 216.91 [158.47–327.15] pg/mL; class 2: 351.80 [251.13–470.36] pg/mL; class 2 versus class 0: Z = 4.79, P < 0.001; class 2 versus class 1: Z = 2.32, P = 0.02) (Figure 2(f)).