Fig. 3

Serum levels of CA125 and CEA in relation to the histological grade of IPMN in CA19-9-negative patients. Comparisons between different histological grades of IPMN without CA19-9 elevation and CEA levels (A) and CA125 levels (B).*p < 0.05, ns, not significant, p-values derived from Welch’s t-test. CA19-9, carbohydrate antigen 19-9; CA125, carbohydrate antigen 125; CEA, carcinoembryonic antigen; IPMN, intraductal papillary mucinous neoplasm