Table 2. CEUS features of SLN versus the pathology results of SLN.
| Characteristics | Total | SLN negative | SLN positive | P value |
|---|---|---|---|---|
| Longitudinal diameter (cm) | 1.14±0.36 | 1.05±0.28 | 1.27±0.41 | 0.004 |
| Transverse diameter (cm) | 0.61±0.15 | 0.57±1.31 | 0.62±0.14 | 0.130 |
| Distance from the skin (cm) | 1.14±0.44 | 1.18±0.47 | 1.08±0.41 | 0.292 |
| Aspect ratio | 0.139 | |||
| <2 | 50 (56.8) | 25 (50.0) | 25 (50.0) | |
| ≥2 | 38 (43.2) | 25 (65.8) | 13 (34.2) | |
| Cortical thickness | 0.009 | |||
| ≥3 mm | 37 (42.0) | 15 (40.5) | 22 (59.5) | |
| <3 mm | 51 (58.0) | 35 (68.6) | 16 (31.4) | |
| Enhancement pattern | 0.000 | |||
| Type I | 47 (53.4) | 40 (85.1) | 7 (14.9) | |
| Type II–III | 41 (46.6) | 10 (24.4) | 31 (75.6) |
Data are shown as mean ± standard deviation or n (%). CEUS, contrast-enhanced ultrasound; SLN, sentinel lymph node.