[Pre-operative sera levels of CEA and CA19-9 and tissular distribution of tumor marker CA19-9 in colorectal carcinoma: correlation with morphological features of neoplasia].

Objective: To compare sera levels of CEA and CA19-9 and tissular expression of the CA19-9 and to correlate these with morphological features of the colorectal carcinoma.

Methods: Forty five patients with colorectal carcinoma underwent surgical treatment following measurement of pre-operative levels of CA19-9 and CEA. Sera levels of CEA = 5.

Prognostic value of carcinoembryonic antigen distribution in tumor tissue of colorectal carcinoma.

Context: Carcinoembryonic antigen (CEA) can be detected in colorectal tumor tissue but its role in the survival of patients remains controversial.

Objective: To characterize the expression of tissue CEA using immunohistochemical staining in colorectal tumors and to analyze the relationship between this finding and preoperative plasmatic level of CEA, morphologic features and survival of patients operated with curative intent for colorectal carcinoma.

Method: Forty-seven patients were included in the study: 18 (38.