CEACAM5 and cyst: The median age (p = 0.003), location of the cystic lesion (p = 0.031), connection of the main pancreatic duct and cyst (p < 0.001), CEA (p = 0.002), and malignant predictive value by AI (p < 0.001) and malignant predictive value by AI using only CEA (p < 0.001) of malignant cystic lesions were significantly different compared to that of benign lesions, but no significant difference was found between malignant and benign cystic lesions in terms of sex, type of cyst, CA19-9, CA125, and amylase.