Figure 4From: Chromogranin A is a reliable serum diagnostic biomarker for pancreatic neuroendocrine tumors but not for insulinomas Comparing CgA levels in patients with tumor metastasis with the levels in patients with localized tumors. Individual levels were presented as dots. The serum CgA levels in 18 patients with tumor metastasis were significantly higher than that in 65 patients with localized tumors, P = 4.1 × 10−5.Back to article page