Table 1 The demographic and baseline characteristics of the study patients.
Characteristics | Malignant nodules (n = 93) | Benign nodules (n = 92) | P value |
|---|---|---|---|
Age (years) | 50.87 ± 10.12 (31–74)* | 36.35 ± 11.26 (18–67)* | 0.001 |
BMI (kg/m2) | 22.89 (21.08, 25.31)※ | 22.27 (19.69, 24.32)※ | 0.038 |
Family history of breast cancer | 0.024 | ||
Yes | 9 (9.7%) | 1 (1.1%) | |
No | 84 (90.3%) | 91 (98.9%) | |
Breast pain | 0.002 | ||
Yes | 78 (83.9%) | 58 (63.0%) | |
No | 15 (16.1%) | 34 (37.0%) | |
Nipple discharge | 0.990 | ||
Yes | 2 (2.2%) | 3 (3.3%) | |
No | 91 (97.8%) | 89 (96.3%) | |
Palpable mass | 0.002 | ||
Yes | 78 (83.9%) | 58 (63.0%) | |
No | 15 (16.1%) | 34 (37.0%) | |
Skin thickening | 0.248 | ||
Yes | 3 (3.2%) | 0 (0.0%) | |
No | 90 (96.8%) | 92 (100.0%) | |
Position of mass | 0.417 | ||
Left | 45 (48.4%) | 50 (54.3%) | |
Right | 48 (51.6%) | 42 (45.7%) | |
Quadrant | 0.550 | ||
Upper outer | 49 (52.7%) | 45 (48.9%) | |
Upper inner | 25 (26.9%) | 20 (21.7%) | |
Lower inner | 7 (7.5%) | 10 (10.9%) | |
Lower outer | 12 (12.9%) | 17 (18.5%) | |
Enlarged lymph nodes in axillary regions | 0.001 | ||
Yes | 23 (24.7%) | 5 (5.4%) | |
No | 70 (75.3%) | 87 (94.6%) | |
Major diameter(mm) | 20.70 (15.25, 28.20)※ | 18.85 (14.10,26.05)※ | 0.394 |
Incident angle(°) | 41.47 ± 14.27 (13.90–72.70)* | 22.65 ± 11.09 (3.90–52.30)* | 0.001 |
