Table 1 Study sample characteristics.
From: The utility of quantifying the orientation of breast masses in ultrasound imaging
Characteristic | Malignant mass (n = 83) | Benign mass (n = 135) | P value |
|---|---|---|---|
Long diameter (mm) | 20.43 ± 8.96(7.5–46.4)* | 18.32 ± 7.52(7.5–47.8)* | 0.075 |
Short diameter (mm) | 13.06 ± 6.24(2.1–28.0)* | 9.09 ± 4.26(3.4–28.9)* | 0.001 |
Age (year) | 51.27 ± 9.90 (31–71)* | 36.64 ± 10.33 (18–60)* | 0.001 |
BMI (kg/m2) | 23.92 ± 3.08 (18.3–34.2)* | 22.04 ± 3.04 (16.7–33.8)* | 0.001 |
Family history of breast cancer | 0.429 | ||
Yes | 4 (4.9) | 2 (1.8) | |
No | 77 (95.1) | 107 (98.2) | |
Breast pain | 0.543 | ||
Yes | 15 (18.1) | 29 (21.5) | |
No | 68 (81.9) | 106 (78.5) | |
Nipple discharge | 0.483 | ||
Yes | 4 (4.8) | 4 (3.0) | |
No | 79 (95.2) | 131 (97.0) | |
Palpable mass | 0.001 | ||
Yes | 73 (88.0) | 71 (52.6) | |
No | 10 (12.0) | 64 (47.4) | |
Architectural changes | 0.316 | ||
Skin thickening | 3 (3.6) | 1 (0.7) | |
Architectural distortion | 4 (4.8) | 7 (5.2) | |
No change | 76 (91.6) | 127 (94.1) | |
Position of mass | 0.369 | ||
Left | 36 (43.4) | 67 (49.6) | |
Right | 47 (56.6) | 68 (50.4) | |
Quadrant | 0.095 | ||
Upper outer | 38 (45.8) | 60 (44.4) | |
Upper inner | 25 (30.1) | 26 (19.3) | |
Lower inner | 5 (6.0) | 20 (14.8) | |
Lower outer | 15 (18.1) | 29 (21.5) | |
Enlarged lymph nodes in axillary regions | 0.001 | ||
Yes | 22 (26.5) | 6 (4.4) | |
No | 61 (73.5) | 129 (95.6) |
