Table 3.
Characteristics of the ORN patients with regard to tumor site
| Parameters | Tongue base | Parotid gland | Tonsil | Hypopharynx/larynx | Oral cavity | Total |
|---|---|---|---|---|---|---|
| Patients (N) | 3 | 2 | 9 | 3 | 34 | 51 |
| Proportion of males | 78 % | |||||
| Average Age | 55.2 ± 10.1 | |||||
| IMRT | 1 | 1 | 1 | 0 | 6 | 9 (17.6 %) |
| Mean dose (range) | 66.6 Gy (64–72 Gy) | 70 Gy (70Gy) | 67.23 Gy (64–72Gy) | 67.53 Gy (64–69.6 Gy) | 66.55 Gy (59.4–72.8 Gy)a | 66.76 Gy (59.4–72.8 Gy)a |
| Chemo | 3 | 1 | 4 | 3 | 15 | 26 (50.9 %) |
| T stage | ||||||
| T1 | 1 | 8 | 9 (17.6 %) | |||
| T2 | 1 | 1 | 4 | 2 | 12 | 20 (39.2 %) |
| T3 | 1 | 2 | 1 | 1 | 5 (9.8 %) | |
| T4 | 1 | 1 | 2 | 13 | 17 (33.3 %) | |
| N stage | ||||||
| N0 | 1 | 2 | 1 | 12 | 16 (31.4 %) | |
| N1 | 2 | 10 | 12 (23.5 %) | |||
| N2 | 3 | 1 | 5 | 2 | 10 | 21 (41.1 %) |
| N3 | 2 | 2 (2.9 %) | ||||
| Bone surgery | 1 | 1 | 4 | 0 | 20 | 26 (50.9 %) |
| Periostal resection | 0 | 0 | 0 | 0 | 2 | 2 (3.9 %) |
| Marginal resection | 0 | 1 | 1 | 0 | 10 | 12 (23.5 %) |
| Segmental resection | 0 | 0 | 1 | 0 | 5 | 6 (11.8 %) |
| Temporary splitting | 1 | 0 | 2 | 0 | 3 | 6 (11.8 %) |
a2 patients received second RT (50 Gy) due to disease's recurrence”