Table 2.
Differences in treatments and results between the two radiation dose groups
| Single dose of radiotherapy | <5 Gy (14 patients) |
≥5 Gy (19 patients) |
p value |
|---|---|---|---|
| Total or partial thyroidectomy | 7 (50%) | 5 (26%) | 0.162 |
| Concurrent chemoradiotherapy | 7 (50%) | 8 (42%) | 0.653 |
| Radiation field of regional cervical lymph nodes | 8 (57%) | 3 (16%) | 0.012 |
| Local recurrence | 7 (50%) | 5 (26%) | 0.162 |
| Died from local recurrence | 5 (36%) | 1 (5%) | 0.025 |
The χ 2 test showed that there was a significant difference between the group of patients who received radiotherapy that included regional cervical lymph nodes and the group of patients who received radiotherapy for only the primary and lymph node metastasis lesions. There were significantly fewer patients who died from local recurrence in the ≥5 Gy/fr group (hypofractionated radiotherapy group).