Effectiveness of Quantitative Shear Wave Elastography for the Prediction of Axillary Lymph Node Metastasis
Table 1
Statistic analysis between benign and malignant lymph nodes (n = 115).
Variable
Benign (n = 45)
Malignant (n = 70)
Statistic value
value
Age (year)
53.31 ± 9.84
51.8 ± 9.04
0.84
0.4000a
Short-axis diameter (mm)
5.30 ± 1.50
11.5 ± 6.20
7.95
<0.0001a
Long/short-axis ratio
1.76(1.55,2.21)
1.585(1.34,2.08)
3.71
0.0541b
Maximal cortex (mm)
2.20(1.40,3.20)
5.20(2.30,7.20)
20.19
<0.0001b
Hilum
19.35
<0.0001d
Absent, n (%)
2.00 (4.4%)
31.00 (44.3%)
Present, n (%)
43.00 (95.6%)
39.00 (55.7%)
Emax (kPa)
16.80 (14.50,19.40)
25.45 (19.0,41.50)
46.12
<0.0001b
Emean (kPa)
11.70 (9.90,12.60)
15.45 (13.20,24.70)
34.61
<0.0001b
Emin (kPa)
7.90 (6.50,9.80)
11.15 (9.00,13.80)
24.32
<0.0001b
Emean-m (kPa)
1.36 ± 0.28
2.03 ± 0.61
−8.05
<0.0001c
Emax, maximal elasticity score of the lesion; Emean, mean elasticity score of the lesion; Emin, minimal elasticity score of the lesion; Emean-m, ratio of Emean mean of the lesions divided by Emean of surrounding muscles.aStudent's t test.bWilcoxon rank sum test.cStudent’s t’ test.dChi-square test.
