CEACAM5 and neoplasm: The presence of ascites, level of ascites and the degree of peritoneal metastasis are not correlated with CEA and CA 19-9; however they have a significant correlation with CA 125 positivity.44 The serum level of CA 125 was reported to be more sensitive in combination with other tumor markers such as CA 19-9 for peritoneal dissemination.44