X. Filella et al., USE OF CA-19-9 IN THE EARLY DETECTION OF RECURRENCES IN COLORECTAL-CANCER - COMPARISON WITH CEA, Tumor biology, 15(1), 1994, pp. 1-6
The serum levels of CA 19-9 were determined in the follow-up of 370 pa
tients with colorectal cancer and compared with CEA. An increase in CA
19-9 preceded clinical diagnosis of recurrence in 25% of 72 patients.
The mean time between the rise in CA 19-9 and clinical diagnosis of r
elapse was 3.7 months (median 3). Sensitivity of CA 19-9 in the early
diagnosis of recurrence was much lower than that obtained for CEA (75%
). Only 1 patient had elevated CA 19-9 levels and normal CEA.