Table 3: Factor of secondary cervical lymph node metastases.
| Factor | No. of patients (% of total) | |
| T status | ||
| T1 | 38 (27) | 5 (31) |
| T2 | 65 (46) | 7 (44) |
| T3 | 4 (3) | 0 |
| T4a | 33 (23) | 4 (25) |
| T4b | 2 (1) | 0 |
| WHO grade | ||
| Grade1 | 87 (61) | 7 (44) |
| Grade2 | 41 (29) | 7 (44) |
| Grade3 | 4 (3) | 2 (12) |
| Unknown | 10 (7) | 0 |
| YK classification | ||
| YK-2 | 12 (8) | 0 |
| YK-3 | 55 (39) | 7 (44) |
| YK-4C | 32 (23) | 8 (50) |
| YK-4D | 3 (2) | 1 (6) |
| Unknown | 40 (28) | 0 |
| Treatment | ||
| Surgery | 108 (76) | 13 (81) |
| CCRT (+salvage) | 34 (24) | 3 (19) |
| SLN biopsy | ||
| + | 44 (31) | 3 (19) |
| - | 98 (69) | 13 (81) |
| Sectional margin | ||
| Negative | 100 (70) | 8 (50) |
| Dysplasia | 10 (7) | 3 (19) |
| Positive | 13 (9) | 2 (12) |
| Unknown | 19 (14) | 3 (19) |
| Local recurrence | ||
| Negative | 126 (89) | 13 (81) |
| Positive | 16 (11) | 3 (19) |
| Total | 142 (100) | 13 (100) |