Table 3 Definitions of N and T Categories and Their Impact on the Prognostic Value of N and T Staging Systems
From: The extramural metastasis might be categorized in lymph node staging for colorectal cancer
Definition | EM Classified into N and T Categories | N Staging | T Staging | |||
|---|---|---|---|---|---|---|
| Â | N | T | AIC | HR (95% CI) | AIC | HR (95% CI) |
A | TNM classification (7th ed) | 1040.2 | 2.37(1.92-2.92) | 1094.1 | 1.36(1.15-1.60) | Â |
B | Distinct nodal involvement | EM for (T3 or T4) | 1040.2 | 2.37(1.92-2.92) | 1089.7 | 1.42(1.20-1.68) |
C | 1.Distinct nodal involvement | pT staging | 1025.3 | 2.65(2.15-3.27) | 1090.9 | 1.37(1.15-1.61) |
| Â | 2.EX | Â | Â | Â | Â | Â |