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Association between the number of sonographic features with the risk of recurrence of TNBCs.
| US feature group | Risk of recurrence group | |
|---|---|---|
| Low risk | High risk | |
| No malignant features | 11 (35.5%) | 20 (64.5%) |
| 1–2 malignant features | 42 (63.6%) | 24 (36.4%) |
| 3–4 malignant features | 14 (82.4%) | 3 (17.6%) |
| P value | 0.003 | |
