Summary of primary HNSCC tumor sites evaluated
| Primary Site | No. of Patients |
|---|---|
| Untreated tumors (n = 22) | |
| Larynx | 7a |
| Hypopharynx | 1 |
| Retromolar trigone, anterior tonsillar pillar | 3 |
| Oral cavity, other | 5 |
| Oropharynx, other | 3 |
| Sinuses, nose | 3 |
| Recurrent or metastatic tumors (n = 8) | |
| HNSCC invading parotid (n = 2), parapharyngeal space metastasis, oral cavity (n = 2), base of tongue, cheek, neopharynx |
↵a Three of 7 laryngeal tumors had pathologically proven thyroid cartilage invasion.