Preoperative Serum Interleukin-6 Is a Potential Prognostic Factor for Colorectal Cancer, including Stage II Patients

Figure 2

Three-year overall survival (OS) rates according to the preoperative serum interleukin-6 (IL-6) status (Kaplan-Meier analysis). (a) OS of all 233 patients. (b) OS of the 188 stages I–III colorectal cancer patients. (c) OS of the 45 stage IV patients.

(a)

(b)

(c)