Table 2.
Second radiation therapy treatment characteristics
| N = 72 (%) | |
|---|---|
| Age (years), median (range) | 62 (31-91) |
| Multiply recurrent | 19 (26%) |
| Primary surgery | |
| Mastectomy | 23 (32%) |
| Wide local excision | 11 (15%) |
| Axillary mass excision | 3 (4%) |
| Axillary lymph node dissection only | 4 (6%) |
| Biopsy only∗ | 27 (38%) |
| No biopsy | 4 (6%) |
| NR/NA | - |
| Axillary surgery | |
| Axillary lymph node dissection | 30 (42%) |
| Sentinel lymph node biopsy | 3 (4%) |
| No axillary surgery | 38 (53%) |
| NR/NA | 1 (1%) |
| Gross residual disease at reirradiation | 34 (47%) |
| Modality | |
| Photons +/- electrons | 52 (72%) |
| Protons | 20 (28%) |
| Intent | |
| Curative | 44 (61%) |
| Palliative | 28 (39%) |
| RT fields | |
| Unilateral breast/chest wall +/- nodes | 43 (60%) |
| Bilateral breast/chest wall +/- nodes | 9 (13%) |
| Partial breast | 1 (1%) |
| Nodes only | 19 (26%) |
| NR/NA | - |
| Chemotherapy† | |
| Neoadjuvant | 27 (38%) |
| Adjuvant | 28 (39%) |
| Concurrent | 17 (24%) |
| NR/NA | 1 (1%) |
| Hormone therapy† | |
| Neoadjuvant | 5 (6%) |
| Adjuvant | 25 (35%) |
| Concurrent | 4 (6%) |
| NR/NA | 1 (1%) |
| Concurrent hyperthermia | |
| Yes | 15 (21%) |
| No | 57 (79%) |
| NR/NA | - |
| bid treatment | |
| Yes | 4 (5%) |
| No | 68 (95%) |
| NR/NA | - |
Abbreviations: NA = not applicable; NR = not reported; RT = radiation therapy.
∗
Patients underwent mastectomy previously, were already metastatic at presentation, and/or were being treated palliatively.
†
Categories are not mutually exclusive.