Lee et al (2010)16 Jian-Hui et al (2016)17 | Lymph node ratio system (TNrM system) | A numeric value: MLR0=0 MLR1≥0.1-0.3 MLR2>0.3–0.6 MLR3>0.6 | The ratio between the number of positive LNs and total dissected LNs. |
Jian-Hui et al (2016)17 | LODDS | A numeric value | The log of the ratio between the number of positive and negative LNs. |
Choi et al (2016)18 | Topographic and numeric | New N0 | No metastatic LN in any group |
New N1 | 1 positive LN among 3 groups (LC alone, GC alone, or EP alone), regardless of number |
New N2 | 2 positive out of 3 groups (LC+GC, LC+EP, or GC+EP), regardless of number |
New N3 | Positive results for all 3 groups (LC+GC+EP) |
Gurzu et al8 (2016-present proposal) | Depth of infiltration combined with LN status | Stage A1 | T1N0 |
Stage A2 | T1N1-3 |
Stage B1 | T2N0 |
Stage B2 | T2N1-3 |
Stage C1 | T3N0 |
Stage C2 | T3N1-3 |
Stage D | T4N0-3 |