Table 1.
patient baseline characteristics
| Re-irradiation | visible residual tumor | R1/Pn+ resected tumors | |
|---|---|---|---|
| patient number | 16 | 60 | 43 |
| prior surgery | 5 | 26 | 43 |
| visible residual/no prior surgery | 15 | 60 | 0 |
| R1/Pn+ | 1 | 0 | 43 |
| recurrent tumors | 16 | 26 | 9 |
| re-irradiation | 16 | 15 | 1 |
| Stages (TNM 7th edition 2010) | |||
| T1 | 1 | 8 | |
| T2 | 2 | 7 | |
| T3 | 4 | 10 | 7 |
| T4 | 12 | 45 | 15 |
| Tx | 1 | 6 | |
| Not applicable | 1 | ||
| N0 | |||
| N1 | 1 | ||
| N2a | 2 | ||
| N2b | 1 | 3 | 4 |
| N2c | 1 | 1 | |
| histology | |||
| adenoid cystic carcinoma | 13 | 52 | 38 |
| mucoepidermoid carcinoma | 1 | 2 | 3 |
| acinic cell carcinoma | 1 | 3 | |
| adenocarcinoma | 1 | 1 | |
| squamous cell carcinoma | 1 | 1 | 1 |
| MSGT NOS | 1 | ||
| site | |||
| base of skull | 6 | 9 | 1 |
| intracranial extension | 2 | ||
| orbit | 1 | 4 | |
| orbit/pterygopalatine fossa | 4 | 2 | 1 |
| petrous bone | 1 | ||
| nasal cavity | 1 | 1 | |
| paranasal sinus | 3 | 16 | 7 |
| maxilla | 1 | 2 | |
| palate | 1 | 6 | |
| planum buccale | 1 | ||
| nasopharynx | 3 | ||
| oropharynx | 1 | ||
| external auditory canal | 1 | 2 | |
| parotid gland | 1 | 12 | 17 |
| submandibular gland | 2 | 5 | |
| sublingual gland | 2 | ||
| base of tongue | 2 | ||
| lacrimal gland | 1 |