Published in Cancer Detection and Prevention 1998; 22(1):57-61.

A Predictive Value of Carcinoembryonic Antigen in Draining Venous Blood for Colorectal Cancer Patients with Postoperative Hematogenous Metastases

Yoshiki Tabuchi MD PhDa, Takeshi Nakamura MDb, Tetsuya Kuniyasu MDb

aFaculty of Health Science; bFirst Department of Surgery, Kobe University School of Medicine, Kobe, Japan

Address all correspondence and reprint requests to: Yoshiki Tabachi, M.D., Ph.D., Faculty of Health Science, Kobe University School of Medicine. Tomogaoka 7-10-2, Suma-ku, 564-01, Japan.

ABSTRACT: Correlations between carcinoembryonic antigen (CEA) levels of peripheral (p) and draining (d) venous blood and postoperative hematogenous metastases (HM) were examined in 76 advanced (T2-4) colorectal adenocarcinoma patients, to clarify a predictive value of dCEA and the gradient (d-pCEA) between d- and pCEA levels in patients with HM. HM were found in 19 patients (HM group), but not found in 57 patients (non-HM group). The mean value (27.4 ng/ml) of dCEA and positive rates (100 and 89.5%) of d- and d-pCEA levels were significantly higher than those (9.8 ng/ml and 57.9%) of pCEA in the HM group, though no significant difference was found among p-, d-, and d-pCEA values and positive rates in the non-HM group. Significant linear correlations, Y (log dCEA, ng/ml) = -0.039X (month) + 2.016 and Y (log d-pCEA, ng/ml) = -0.039X (month) + 1.823, were found between d- and d-pCEA levels and HM-diagnostic period. These results suggest that colorectal cancer patients with HM are more effectively predicted by the determination of d- and d-pCEA levels than of pCEA levels and that they are patients with positive d- and d-pCEA levels. These patients seem to have a high possibility of early HM.

KEY WORDS: large bowel cancer, liver metastasis, lung metastasis, tumor marker.