Table 3 Mammography-only detected breast cancers stratified for BRCA1 or BRCA2 mutation status
No. | Mutation status | Age at diagnosis | Tumour type | Invasive tumour size | Invasive tumour grade | Screening round |
|---|---|---|---|---|---|---|
1 | BRCA1 | 31 | DCIS | — | — | 2 |
2 | BRCA1 | 33 | DCIS | — | — | 2 |
3 | BRCA1 | 40 | IDC | 1–2 cm | Grade 3 | 1 |
4 | BRCA1 | 42 | DCIS | — | — | 3 |
5 | BRCA1 | 56 | IDC | <1 cm | Grade 3 | 4 |
1 | BRCA2 | 36 | DCIS | — | — | 1 |
2 | BRCA2 | 37 | DCIS | — | — | 1 |
3 | BRCA2 | 35 | IDC | <1 cm | Grade 2 | 4 |
4 | BRCA2 | 36 | IDC | 1–2 cm | Grade 3 | 1 |
5 | BRCA2 | 37 | ILC | 2–5 cm | Grade 2 | 1 |
6 | BRCA2 | 39 | Other | NA | NA | 3 |
7 | BRCA2 | 42 | DCIS | — | — | 4 |
8 | BRCA2 | 53 | DCIS | — | — | 2 |
9 | BRCA2 | 44 | ILC | >5 cm | 3 | 1 |
10 | BRCA2 | 47 | ILC | >5 cm | 2 | 5 |
11 | BRCA2 | 51 | NA | NA | NA | 1 |
