Pretreatment Carcinoembryonic Antigen Level Serves as a Potential Biomarker to Guide Adjuvant Radiotherapy in pT4N+ Colon Cancer Patients

Figure 1

Kaplan–Meier curves for overall survival for CC patients who received surgery and surgery plus adjuvant radiotherapy. (a) pT4N + M0 patients; (b) pT4N2M0 patients.

(a)

(b)