Table 5.
Clinicopathologic Features of Patients With Negative Lateral Lymph Nodes on Preoperative Ultrasonography.
| Factors | Total (n = 89) | Lateral lymph node metastases | P | |
|---|---|---|---|---|
| (+) (n = 15) | (−) (n = 74) | |||
| Male n(%) | 28 (31.5%) | 7 (46.7%) | 21 (28.4%) | 0.277 |
| Age (years) | 48.5 ± 11.5 | 50.4 ± 7.9 | 48.1 ± 12.1 | 0.371 |
| CT >30 pg/mL n(%) | 18 (20.2%) | 1 (6.7%) | 17 (23.0%) | 0.280 |
| CEA >15 ng/mL n(%) | 15 (16.9%) | 3 (20.0%) | 12 (16.2%) | 1.000 |
| Multifocality n(%) | 14 (15.7%) | 3 (20.0%) | 11 (14.9%) | 0.913 |
| Bilaterality n(%) | 12 (13.5%) | 3 (20.0%) | 9 (12.2%) | 0.692 |
| Total tumor size (cm) | 1.9 ± 1.3 | 1.5 ± 0.9 | 1.9 ± 1.3 | 0.244 |
| Capsular invasion n(%) | 15 (16.9%) | 3 (20.0%) | 12 (16.2%) | 1.000 |
| Extrathyroidal invasion n(%) | 4 (4.5%) | 1 (6.7%) | 3 (4.1%) | 0.529 |
| positive central LNM n(%) | 30 (33.7%) | 10 (66.7%) | 20 (27.0%) | 0.003 |
CT: calcitonin; CEA: carcinoembryonic antigen.
The continuous variables are presented as the means ± standard deviations.