Table 4. Sequence of LNM to different regions according to primary tumor location.
| Location | 1 (%) | 2 (%) | 3 (%) | 4 (%) | 5 (%) | 6 (%) | 7 (%) |
|---|---|---|---|---|---|---|---|
| Ut | 105 (10.0) | 101 (7.8) | 106 (7.8) | 104 (4.4) | 107 (2.2) | 110 (2.2) | 1 (1.1) |
| Ut-Mt | 105 (12.1) | 108 (6.1) | 101 (6.1) | 106 (5.0) | 104 (5.0) | 1 (5.0) | 102 (2.0) |
| Mt-Ut | 108 (8.2) | 105 (7.5) | 106 (6.8) | 101 (6.1) | 107 (4.1) | 1 (4.1) | 104 (3.4) |
| Mt | 108 (12.9) | 1 (12.3) | 107 (7.2) | 101 (4.8) | 105 (4.5) | 7 (3.2) | 110 (2.8) |
| Mt-Lt | 1 (18.8) | 108 (17.9) | 107 (9.6) | 7 (4.2) | 105 (4.2) | 110 (3.7) | 101 (3.7) |
| Lt-Mt | 1 (21.3) | 108 (16.1) | 107 (10.1) | 110 (10.0) | 7 (5.8) | 2 (5.0) | 3 (4.8) |
| Lt | 1 (23.5) | 110 (18.4) | 7 (10.1) | 108 (9.2) | 107 (7.0) | 2 (2.5) | 3 (2.4) |
LNM, lymph node metastasis; Ut, Upper thoracic tumor; Mt, Middle thoracic tumor; Lt, Lower thoracic tumor; Ut-Mt, upper-middle thoracic tumor; Mt-Ut, middle-upper thoracic tumor; Mt-Lt, middle-lower thoracic tumor; Lt-Mt, lower-middle thoracic tumor; Ut-Mt-Lt, upper-middle-lower thoracic tumor; Um, upper mediastinal; Mm, middle mediastinal; Lm, lower mediastinal.