Sonographic features | Benign (n [%]) | Malignant (n [%]) | P-value | Odds ratio (95% confidence interval) |
---|---|---|---|---|
Nodule size (cm) | ||||
< 2 | 85 (73.3) | 31 (26.7) | 1 | |
≥ 2 | 17 (85) | 3 (15) | 0.263 | 0.484 (0.133–1.766) |
Microcalcification number | ||||
<5 | 81 (81) | 19 (19) | 1 | |
>5 | 21 (58.3) | 15 (41.7) | 0.007 | 3.045 (1.328–6.982) |
Echogenicity | ||||
Hyperechogenicity | 23 (88.5) | 3 (11.5) | 1 | |
Isoechogenicity | 37 (78.7) | 10 (21.3) | 0.305 | 2.072 (0.515–8.329) |
Hypoechogenicity | 42 (66.7) | 21 (33.3) | 0.045 | 3.833 (1.032–14.238) |
Composition | ||||
Solid-cystic | 29 (76.3) | 9 (23.7) | 1 | |
Solid | 73 (74.5) | 25 (25.5) | 0.825 | 0.906 (0.378–2.174) |
Margin | ||||
Regular | 63 (85.1) | 11 (14.9) | 1 | |
Irregular | 12 (63.2) | 7 (36.8) | 0.037 | 3.341 (1.078–10.352) |
Ill defined | 17 (73.9) | 6 (26.1) | 0.222 | 2.021 (0.653–6.256) |
Lobulated | 10 (50) | 10 (50) | 0.002 | 5.727 (1.934–16.959) |