Table 2.
Univariate analysis of the correlation between ultrasonography findings of the primary tumor and rate of cervical lymph node metastasis in micropapillary thyroid cancer
| Ultrasonography findings | n(rate of lymph node metastasis, %) | Pvalue | |
|---|---|---|---|
| Nature | Solid | 91 (41.6) | 0.400 |
| Mixed | 0 (0) | ||
| Shape | Round to ovoid | 27 (32.5) | 0.014 |
| Irregular | 32 (39.5) | ||
| Taller than wide | 32 (57.1) | ||
| Echogenicity | Isoechoic | 4 (20.0) | <0.001 |
| Hypoechoic | 23 (28.7) | ||
| Markedly hypoechoic | 64 (53.3) | ||
| Margin | Well defined | 18 (30.5) | 0.033 |
| Poorly defined | 73 (45.3) | ||
| Calcification | Absent | 65 (39.9) | 0.745 |
| Microcalcification | 13 (44.8) | ||
| Other types | 13 (46.4) | ||