Table 1. Characteristics of breast cancer patients with positive sentinel lymph node.
| Variable | No. (%) |
| Age, y | |
| ≤50 | 71 (54.62%) |
| >50 | 59 (45.38%) |
| Tumor size | |
| T1 | 52 (40.00%) |
| T2 | 68 (52.31%) |
| T3 | 6 (4.62%) |
| NA | 4 (3.08%) |
| Tumor type | |
| Ductal | 124 (95.38%) |
| Others | 6 (4.62%) |
| Lymphovascular invasion | |
| Yes | 18 (13.85%) |
| Others* | 112 (86.15%) |
| Number of SLN exmanined | |
| 1 | 57 (43.85%) |
| 2 | 36 (27.69%) |
| ≥3 | 37 (28.46%) |
| Size of SLN metastasis | |
| Micrometastasis | 32 (24.62%) |
| Macrometastasis | 95 (73.08%) |
| NA | 3 (2.31%) |
| Grade | |
| I | 9 (6.92%) |
| II | 38 (29.23%) |
| III | 25 (19.23%) |
| NA | 58 (44.62%) |
| Molecular subtype | |
| Triple negative | 16 (12.31%) |
| Luminal A | 69 (53.08%) |
| Luminal B | 21 (16.15%) |
| HER2 over-expression | 11 (8.46%) |
| NA | 13 (10.00%) |
| NSLN metastasis | |
| Yes | 76 (58.46%) |
| No | 54 (41.54%) |
*
the data of most patients in this group was not available.
NSLN, non-sentinel lymph node; NA, not available.