Table 6 Ipsilateral or contralateral central lymph node metastasis in patients with Delphian lymph node metastasis (excluding those that underwent lateral neck node dissection)
| Regardless of tumor size Delphian lymph node metastasis | P-value | Tumor size ≤1 cm Delphian lymph node metastasis | P-value | |||
|---|---|---|---|---|---|---|
| Present (n = 31) | Absent (n = 226) | Present (n = 12) | Absent (n = 136) | |||
| Contralateral central LNM | 13 (41.9%) | 22 (9.7%) | 0.001 | 5 (41.7%) | 9 (6.6%) | 0.001 |
| Ipsilateral central LNM | 12 (38.7%) | 40 (17.7%) | 2 (16.7%) | 20 (14.7%) | ||
| Non-central LNM | 6 (19.4%)* | 164 (72.6%) | 5 (41.7%)* | 107 (78.7%) | ||