Table II.
Conventional ultrasound characteristics of benign and malignant breast lesions, [n (%)].
| Characteristic | Malignant (n=30) | Benign (n=86) | Overall | P-value |
|---|---|---|---|---|
| Mean age (year) | 52.43±8.12 | 45.16±8.96 | 47.13±9.29 | 0.014a |
| Size (diameter, mm) | 28.24±9.54 | 14.34±4.05 | 17.93±8.51 | 0.014a |
| Depth (mm) | 30.11±13.06 | 25.18±10.47 | 26.45±11.35 | <0.001a |
| Position | 0.924 | |||
| Left | 14 (46.7) | 41 (47.7) | 55 (47.4) | |
| Right | 16 (53.3) | 45 (52.3) | 61 (52.6) | |
| Shape | <0.001a | |||
| Oval | 5 (16.7) | 60 (69.8) | 65 (56.0) | |
| Round | 4 (13.3) | 14 (16.3) | 18 (15.5) | |
| Irregular | 21 (70.0) | 12 (14.0) | 33 (28.4) | |
| Margin | 0.001a | |||
| Circumscribed | 2 (6.7) | 19 (22.1) | 21 (18.1) | |
| Indistinct | 2 (6.7) | 26 (30.2) | 28 (24.1) | |
| Angular | 2 (6.7) | 5 (5.8) | 7 (6.0) | |
| Microlobulated | 20 (66.7) | 30 (34.9) | 50 (43.1) | |
| Spiculated | 4 (13.3) | 6 (7.0) | 10 (8.6) | |
| Orientation | 0.032a | |||
| Parallel | 16 (53.3) | 64 (74.4) | 80 (69.0) | |
| Non-parallel | 14 (46.7) | 22 (25.6) | 36 (31.0) | |
| Posterior acoustic features | <0.001a | |||
| None | 9 (30.0) | 57 (66.3) | 66 (56.9) | |
| Enhancement | 3 (10.0) | 6 (7.0) | 9 (7.8) | |
| Shadowing | 7 (23.3) | 23 (26.7) | 30 (25.9) | |
| Combined pattern | 11 (36.7) | 0 (0.0) | 11 (9.5) | |
| Echo pattern | 0.060 | |||
| Hypoechoic | 15 (50.0) | 54 (62.8) | 69 (59.5) | |
| Isoechoic | 4 (13.3) | 16 (18.6) | 20 (17.2) | |
| Hyperechoic | 6 (20.0) | 1 (1.2) | 7 (6.0) | |
| Complex | 5 (16.7) | 15 (17.4) | 20 (17.2) |
a
P<0.05.