Figure 1

Serum concentrations of CgA in patients with insulinomas and non-insulinoma PNETs and in healthy controls. Individual levels were presented as dots. The results were plotted logarithmically to accommodate extreme values. The serum CgA levels were slightly elevated in 57 patients with insulinomas while the CgA levels were significantly increased in 32 patients with non-insulinoma PNETs. The serum levels of CgA in patients with insulinomas (median 64.8 ng/ml) were significantly lower than that in the patients with non-insulinoma PNETs (median 192.5 ng/ml), P = 0.001.