Figure 1

Survival curves of patients according to CEA, CA199, CA724, and CA242 pretreatment serum positivity. A. The difference between CEA-negative patients and CEA-positive patients was not statistically significant (P = 0.085). B. The difference between CA19-9-negative patients and CA19-9-positive patients was statistically significant (P = 0.000). C. The difference between CA72-4-negative patients and CA72-4-positive patients was statistically significant (P = 0.002). D. The difference between CA242-negative patients and CA242-positive patients wasnot statistically significant (P = 0.409).