Characteristic | Classification | Lymph node metastasis group (n = 49) | Non-lymph node metastasis group (n = 50) | χ2 | OR | P value |
---|---|---|---|---|---|---|
Tumor margin (%) | Regular | 4 (8.16%) | 8 (16%) | 1.37 | 1.04 (0.77~1.31) | 0.13 |
Irregular | 45 (91.84%) | 42 (84%) | ||||
Blood flow signal (c%) | No | 10 (20.41%) | 12 (24%) | 0.04 | 0.93 (0.81~1.07) | 0.93 |
Yes | 39 (79.59%) | 38 (76%) | ||||
Posterior echo attenuation (%) | No | 20 (40.82%) | 24 (48%) | 0.94 | 0.90 (0.55~1.10) | 0.13 |
Yes | 29 (59.18%) | 26 (52%) | ||||
BI-RADS grade (%) | < 4 | 3 (6.12%) | 6 (12%) | 7.22 | 1.42 (1.23~1.69) | 0.00 |
4a | 4 (8.16%) | 9 (18%) | ||||
4b | 10 (20.41%) | 15 (30%) | ||||
4c | 12 (24.49%) | 13 (26%) | ||||
5 | 20 (40.82%) | 7 (14%) |