Fig. 2From: Clinicopathological heterogeneity between primary and metastatic sites of gastroenteropancreatic neuroendocrine neoplasmPercentages of patients with CgA-variation at different primary tumor sites (a). Percentages of patients with CgA-variation under different classifications of NENs (b). Percentages of patients with CgA-variation under different types of metastatic tumors (c)Back to article page