Table 7 ASTRO APBI consensus statement categories and classification criteria
Criteria | Suitable | Cautionary | Unsuitable |
|---|---|---|---|
Age | ≥ 60 | 50-59 | < 50 |
Tumor Size | ≤ 2 cm | 2-3 cm | > 3 cm |
T Stage | T1 | Tis and T2 | T3-T4 |
Nodal biopsy | Yes | - | No |
Margins | Negative (≥ 2 mm) | Close (< 2 mm) | Positive |
Histology | Invasive ductal or other favorable subtypes | Invasive Lobular | - |
Pure DCIS | No | ≤ 3 cm | > 3 cm |
ER Receptor | Positive | Negative | - |
LVSI* | No | Limited/Focal | Extensive |
EIC* | No | ≤ 3 cm | > 3 cm |