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Distribution of LNM in each station according to tumor location
| Station | Upper (n = 6 cases) | Middle (n = 28 cases) | Lower (n = 31 cases) |
|---|---|---|---|
| No. 1 | 1 | 3 | 4 |
| No. 2 | 2 | 0 | 0 |
| No. 3 | 2 | 8 | 7 |
| No. 4 | 1 | 7 | 5 |
| No. 5 | 0 | 5 | 6 |
| No. 6 | 0 | 7 | 7 |
| No. 7 | 1 | 3 | 6 |
| No. 8 | 0 | 1 | 4 |
| No. 8a | 0 | 1 | 4 |
| No .8p | 0 | 0 | 0 |
| No. 9 | 0 | 0 | 1 |
| No. 10 | 0 | 0 | 1 |
| No. 11 | 1 | 1 | 0 |
| No. 11p | 1 | 0 | 0 |
| No. 11d | 0 | 1 | 0 |
| No. 12 | 1 | 1 | 1 |
LNM lymph node metastasis
