Table 3.
The risk factors for bilateral LNM and PRLN metastasis.
| Factors | Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|---|
| HR (95%CI) | p | HR (95%CI) | p | ||
| Bilateral LNM | Pyriform sinus invasion | 0.165 (0.064-0.430) | 0.000 | 0.311 (0.111-0.875) | 0.027 |
| Posterior wall invasion | 4.812 (2.259-10.252) | 0.000 | 3.524 (1.559-7.964) | 0.002 | |
| PRLN metastasis | Tumor Size | ||||
| ≤2cm | 0.023 | ||||
| 2-4cm | 6.206 (0.809-47.618) | 0.079 | |||
| >4cm | 12.364 (1.561-97.907) | 0.017 | |||
| Pyriform sinus invasion | 0.213 (0.095-0.481) | 0.000 | 0.346 (0.134-0.891) | 0.028 | |
| Posterior wall invasion | 4.543 (2.201-9.378) | 0.000 | 2.471 (1.047-5.832) | 0.039 | |