Table 1.
Clinical and imaging characteristics of benign and malignant breast lesions
| Benign, n (%) | Malignant, n (%) | Total | P | |
|---|---|---|---|---|
| Age | 44.5±9.4 | 49.3±10.6 | 0.001 | |
| Age | <0.001 | |||
| <50 | 55(39.0) | 86(61.0) | 141 | |
| ≥50 | 18(17.8) | 83(82.2) | 101 | |
| First-degree relatives with breast cancer | 0.70 | |||
| 0 | 73(30.3) | 168(69.7) | 241 | |
| 1 | 0(0.0) | 1(100.0) | 1 | |
| Tumor size (cm) | <0.001 | |||
| <2 | 68(57.1) | 51(42.9) | 119 | |
| ≥2 | 15(12.2) | 108(87.8) | 123 | |
| Tumor shape | 0.012 | |||
| Round, oval | 73(31.7) | 157(68.3) | 230 | |
| Irregular | 0(0.0) | 12(100.0) | 12 | |
| Growth orientation | <0.001 | |||
| Parallel | 68(37.0) | 116(63.0) | 184 | |
| Nonparallel | 5(8.6) | 53(91.4) | 58 | |
| Margin | <0.001 | |||
| Circumscribed | 22(12.0) | 162(88.0) | 184 | |
| Indistinct | 51(87.9) | 7(12.1) | 58 | |
| Contour | <0.001 | |||
| Smooth, lobulated | 66(45.8) | 78(54.2) | 144 | |
| Angular | 7(7.1) | 91(92.9) | 98 | |
| Acoustic shadowing | 0.51 | |||
| Yes | 11(28.9) | 27(71.1) | 38 | |
| NO | 62(30.4) | 142(69.6) | 204 | |
| Microcalcification | <0.001 | |||
| Yes | 11(28.9) | 27(71.1) | 38 | |
| NO | 62(30.4) | 142(69.6) | 204 | |
| Echogenicity | 0.15 | |||
| Hypo-echoic | 63(28.9) | 155(71.1) | 218 | |
| Complex | 10(41.7) | 14(58.3) | 24 | |
| Presence of architectural distortion | <0.001 | |||
| Yes | 0(0.0) | 33(100.0) | 33 | |
| No | 73(34.9) | 136(65.1) | 209 | |
| Presence of duct ectasia | 0.46 | |||
| Yes | 5(26.3) | 14(73.7) | 19 | |
| No | 68(30.5) | 155(69.5) | 223 | |
| CDFI level | <0.001 | |||
| 0-1 | 54(57.4) | 40(42.6) | 94 | |
| 2-3 | 19(12.8) | 129(87.2) | 148 | |
| ES score | <0.001 | |||
| 1 | 5(71.4) | 2(28.6) | 7 | |
| 2 | 22(75.9) | 7(24.1) | 29 | |
| 3 | 36(48.6) | 38(51.4) | 74 | |
| 4 | 10(11.2) | 79(88.8) | 89 | |
| 5 | 0(0.0) | 43(100.0) | 43 | |
| ES score | <0.001 | |||
| 1-3 | 63(57.3) | 47(42.7) | 110 | |
| 4-5 | 10(7.6) | 122(92.4) | 132 | |
| US BI-RADS category | <0.001 | |||
| 2 | 1(100.0) | 0(0.0) | 1 | |
| 3 | 26(96.3) | 1(3.7) | 27 | |
| 4a | 39(83.0) | 8(17.0) | 47 | |
| 4b | 5(16.1) | 26(83.9) | 31 | |
| 4c | 2(2.6) | 76(97.4) | 78 | |
| 5 | 0(0.0) | 58(100.0) | 58 | |
| US BI-RADS category | <0.001 | |||
| 3-4b | 66(88.0) | 9(12.0) | 75 | |
| 4b-5 | 7(4.2) | 160(95.8) | 167 | |
| MRI BI-RADS category | <0.001 | |||
| 1 | 4(80.0) | 1(20.0) | 5 | |
| 2 | 8(100.0) | 0(0.0) | 8 | |
| 3 | 30(93.8) | 2(6.3) | 32 | |
| 4 | 31(20.8) | 118(79.2) | 149 | |
| 5 | 0(0.0) | 48(100.0) | 48 | |
| MRI BI-RADS category | <0.001 | |||
| 0-3 | 42(93.3) | 3(6.7) | 45 | |
| 4-5 | 31(15.7) | 166(84.3) | 197 | |
Abbreviations: BI-RADS: Breast Imaging-Reporting and Data System; US: ultrasound; MRI: magnetic resonance imaging; ES: elastography; CDFI: color doppler flow imaging