Summary of patient characteristics
| Characteristics | No. | % |
|---|---|---|
| Age (yr) | ||
| Mean | 60 | |
| Range | 18–79 | |
| Sex | ||
| Female | 16 | 36.0% |
| Male | 28 | 64.0% |
| Histopathology | ||
| Nonkeratinizing carcinoma | 29 | 65.9% |
| Differentiated | 8 | |
| Undifferentiated | 19 | |
| Unknown | 2 | |
| Keratinizing carcinoma | 8 | 18.2% |
| Unknown | 7 | 15.9% |
| TNM (7th AJCC) | ||
| T1 | 8 | 18.2% |
| T2 | 10 | 22.7% |
| T3 | 4 | 9.1% |
| T4 | 22 | 50.0% |
| N0 | 3 | 6.8% |
| N1 | 16 | 36.4% |
| N2 | 13 | 29.5% |
| N3a | 1 | 2.3% |
| N3b | 11 | 25.0% |
| M0 | 41 | 93.2% |
| M1 | 3 | 6.8% |
| Subsite | ||
| Posterior superior | 12 | 27.3% |
| Lateral wall | 32 | 72.7% |
Note:—TNM indicates tumor, node, metastasis tumor stage; AJCC, American Joint Committee on Cancer.