| Grade 0 No (%) | Grade 1 No (%) | Grade 2 No (%) | Grade 3 No (%) | P-value |
1) At 12 Months of Radiotherapy | 39 (72.2%) | 11 (20.4%) | 4 (7.4%) | 0 (0%) | P = 0.386n.s |
2) At 24 Months of Radiotherapy | 37 (68.5%) | 12 (22.2%) | 5 (9.2%) | 0 (0%) |