Table 2 Ultrasound characteristics of AR status in 104 patients
Characteristics | AR + (n = 71) | AR– (n = 33) | χ2value | p value |
|---|---|---|---|---|
Shape | Â | Â | 0.233 | 0.629 |
 Regular | 5 (7.04%) | 4 (12.12%) |  |  |
 Irregular | 66 (92.96%) | 29 (87.88%) |  |  |
Orientation | Â | Â | 0.495 | 0.482 |
 Parallel | 40 (56.34%) | 21 (63.64%) |  |  |
 Vertical | 31 (43.66%) | 12 (36.36%) |  |  |
Hyperechoic halo | Â | Â | 0.537 | 0.464 |
 Absent | 42 (59.15%) | 22 (66.67%) |  |  |
 Present | 29 (40.85%) | 11 (33.33%) |  |  |
Margin |  |  | 14.493 |  < 0.001* |
 Smooth | 1 (1.41%) | 9 (27.27%) |  |  |
 Unsmooth | 70 (98.59%) | 24 (72.73%) |  |  |
Posterior acoustic pattern | Â | Â | 12.759 | 0.002* |
 Enhancement | 5 (7.04%) | 10 (30.30%) |  |  |
 No change | 41 (57.75%) | 19 (57.58%) |  |  |
 Shadowing | 25 (35.21%) | 4 (12.12%) |  |  |
Calcification | Â | Â | 2.123 | 0.145 |
 Absent | 18 (25.35%) | 13 (39.39%) |  |  |
 Present | 53 (74.65%) | 20 (60.61%) |  |  |
Echo pattern | Â | Â | 0.055 | 0.815 |
 Hypoechoic | 6 (8.45%) | 4 (12.12%) |  |  |
 Heterogeneous | 65 (91.55%) | 29 (87.88%) |  |  |
Adler grade | Â | Â | 0.273 | 0.872 |
 0–1 | 9 (12.68%) | 5 (15.15%) |  |  |
 2 | 18 (25.35%) | 7 (21.21%) |  |  |
 3 | 44 (61.97%) | 21 (63.64%) |  |  |
Elasticity score | Â | Â | 9.429 | 0.022* |
 2 | 2 (2.82%) | 2 (6.06%) |  |  |
 3 | 20 (28.17%) | 13 (39.39%) |  |  |
 4 | 47 (66.20%) | 13 (39.39%) |  |  |
 5 | 2 (2.82%) | 5 (15.15%) |  |  |
BI-RADS | Â | Â | 0.443 | 0.506 |
 3-4a | 25 (35.21%) | 8 (24.24%) |  |  |
 4b-5 | 46 (64.79%) | 25 (75.76%) |  |  |