Regarding the other prognostic elements in the multivariate analysis, poorly cohesive or mucinous adenocarcinoma, more than one organ affected by metastasis, and CA72-4 >6 U/mL were associated with limited PFS, and poorly cohesive or mucinous adenocarcinoma, peritoneal dissemination, CEA >5 ng/mL were associated with unfavorable OS (all p < 0.05). Here, CEACAM5 is linked to mucinous adenocarcinoma.