Table 2.
Single-Factor Analysis of Central-Region Lymph Node Metastasis
| Factors | Number (n=107) | Central Lymph Node Metastasis (CLNM) | χ2 | P | |
|---|---|---|---|---|---|
| Yes (n = 47) | No (n = 60) | ||||
| Gender | 2.736 | 0.098 | |||
| Male | 24 | 7 | 17 | ||
| Female | 83 | 40 | 43 | ||
| TSH levels | 0.145 | 0.704 | |||
| Normal | 86 | 37 | 49 | ||
| Abnormal | 21 | 10 | 11 | ||
| Tg levels | – | 1.000 | |||
| Normal | 99 | 44 | 55 | ||
| Abnormal | 8 | 3 | 5 | ||
| Nodular goiter | 1.226 | 0.268 | |||
| Yes | 55 | 27 | 28 | ||
| No | 52 | 20 | 32 | ||
| Hashimoto’s thyroiditis | 0.102 | 0.749 | |||
| Yes | 22 | 9 | 13 | ||
| No | 85 | 38 | 47 | ||
| Distribution of carcinoma | 9.992 | 0.005 | |||
| Unilateral glandular lobes, single foci | 77 | 41 | 36 | ||
| Unilateral glandular lobes, multiple foci | 9 | 1 | 8 | ||
| Bilateral glandular lobes, multiple foci | 21 | 5 | 16 | ||
| Maximum diameter | 2.838 | 0.092 | |||
| ≤5 mm | 12 | 8 | 4 | ||
| 5 mm < x ≤ 10 mm | 95 | 39 | 56 | ||
| Boundary | – | 0.329 | |||
| Clear | 10 | 6 | 4 | ||
| Unclear | 97 | 41 | 56 | ||
| Echo | – | 0.581 | |||
| Low or no | 104 | 45 | 59 | ||
| Strong or mixed | 3 | 2 | 1 | ||
| Extra-thyroidal expansion | 21.353 | <0.01 | |||
| Yes | 63 | 16 | 47 | ||
| No | 44 | 31 | 13 | ||
| Calcification | 5.541 | 0.019 | |||
| Yes | 70 | 25 | 45 | ||
| No | 37 | 22 | 15 | ||
| Blood flow | 0.439 | 0.508 | |||
| Rich | 63 | 26 | 37 | ||
| Not rich | 44 | 21 | 23 | ||
Abbreviations: TSH, thyroid-stimulating hormone; Tg, thyroglobulin.