Table 5.
10-year risks of any local recurrence (DCIS or invasive) after breast-conserving surgery alone by combinations of age, tumor size and DCIS score
| 10-year risk of local recurrence (%)a (rangeb) by DCIS score group | ||||
|---|---|---|---|---|
| Tumor size (cm) | Age (year) | Low DCIS score (0–38) | Intermediate DCIS score (39–54) | High DCIS score (55–100) |
| ≤ 1 | ≥ 50 | 7.2 (5.3–10.0) | 11.3 (10.2–12.7) | 14.6 (12.9–23.1) |
| < 50 | 10.2 (7.4–13.9) | 15.8 (14.1–17.4) | 19.6 (17.7–30.7) | |
| 1.1–2.5 | ≥ 50 | 10.1 (7.3–12.6) | 13.9 (12.8–15.6) | 19.5 (15.8–28.7) |
| < 50 | 14.5 (10.1–17.2) | 18.9 (17.4–21.1) | 23.2 (21.4–37.2) | |
| > 2.5 | ≥ 50 | 20.4 (14.9–27.0) | 29.1 (27.4–33.3) | 41.1 (33.8–54.4) |
| < 50 | 30.2 (20.6–36.1) | 39.5 (36.6–43.6) | 48.6 (44.1–66.5) | |
aAverage risk for E5194 and Ontario DCIS cohort patients in DCIS score groups
bRisks at boundaries of DCIS score groups