Table 3 Treatment outcome by ASTRO risk stratification for APBI [12]
Risk Group | Number cases | Median follow-up (mos) | Ipsilateral breast failure rate | True local failure rate | Elsewhere* failure rate | Number developing metastatic disease | Number dead of breast cancer |
|---|---|---|---|---|---|---|---|
Suitable | 101 (32%) | 52 | 4.0% | 3.0% | 1.0% | 1 | 1 |
Cautionary | 156 (50%) | 47 | 2.6% | 0.6% | 1.9% | 2 | 1 |
Unsuitable | 55 (18%) | 51 | 1.8% | 1.8% | 0 | 1 | 1 |