ENO2 and lung cancer: The salivary NSE concentration in the control group was 0.179 [0.104; 0.471] mIU/mL, NSE concentration increases in benign lung diseases (0.417 [0.164; 0.608] mIU/mL) and in the lung cancer group (0.252 [0.161; 0.388] mIU/mL) (Figure 2D); however, in this case, the differences are significant only for the group with benign lung diseases compared with the control.