Treatment and follow-up characteristics
| Characteristic | No. |
|---|---|
| Technique | |
| 3D conformal | 72 |
| Intensity-modulated | 54 |
| Ipsilateral only | 3 |
| NOS | 4 |
| Dose to primary site (Gy) (median) (range) | 70 (64–75.6) |
| Radiation treatment time (median) (range) (days) | 41 (35–61) |
| Days to first US (median) (range) | 61 (26–187) |
| Postradiotherapy follow-up (median) (range) (mo) | 53 (9–101) |