Table 3 Proportions of subjects with invasive breast cancer identified, by risk group
Number of women screened | Cancers detected | Rate of detection | Sensitivities of different screening modalities | ||||
|---|---|---|---|---|---|---|---|
Mammography | Ultrasound | M and US | MRI | ||||
Family history positive | 458 | 2 | 0.4% | 50% | 50% | 100% | 100% |
CHEK2 mutation | 353 | 5 | 1.4% | 60% | 80% | 100% | 100% |
No risk factors | 2269 | 16 | 0.7% | 53% | 56% | 75% | 81% |
40–49 | 1022 | 5 | 0.5% | 60% | 80% | 100% | 100% |
50–59 | 1537 | 11 | 0.7% | 64% | 45% | 71% | 82% |
60–65 | 436 | 6 | 1.4% | 40% | 67% | 83% | 830% |
All | 2995 | 22 | 0.7% | 57% | 59% | 82% | 86% |