Several studies have analyzed different carcinoembryonic antigen values ​​in theaspirated fluid with the aim of differentiating mucinous from nonmucinous lesions.The carcinoembryonic antigen cutoff value of 192 ng/mL used in the present study wasderived from an important multicenter study involving 341 patients undergoingpancreatic cyst puncture, which found better accuracy in differentiating betweenmucinous and nonmucinous cysts at this value.7 Here, CEACAM5 is linked to cyst.