Table 1 B-mode features and Doppler sonography of healthy and metastatic LNs (mean ± standard deviation, n.s. = not significant, LN = lymph node)
LN characteristics | Group 1 healthy LNs | Group 2 metastatic LNs | p |
|---|---|---|---|
n | 165 | 15 | Â |
Distance from the skin (mm) | 13.5 ± 5.1 | 15.5 ± 3.0 | n.s. (0.126) |
Horizontal size (mm) | 15.8 ± 6.4 | 14.4 ± 7.0 | n.s. (0.406) |
Vertical size (mm) | 7.2 ± 3.0 | 9.2 ± 3.5 | 0.013 |
Vertical-to-horizontal-size (ratio) | 0.50 ± 0.24 | 0.70 ±0.26 | 0.002 |
Cortex (mm) | 1.4 ± 0.7 | 4.2 ± 4.7 | <0.001 |
Medulla (mm) | 4.8 ± 2.4 | 4.1 ± 2.1 | n.s. (0.299) |
Cortex-to-medulla (ratio) | 0.39 ± 0.31 | 1.22 ± 1.75 | <0.001 |
Cortex >3mm | 3.1% | 40.0% | <0.001 |
Architectural distortions | 0.6% | 40.0% | <0.001 |
Pathologic vascularization | 4.4% | 14.3% | n.s. (0.109) |