Table 1.
Patient characteristics
| Characteristics | Number (%) |
|---|---|
| Age (years) | |
| Median (range) | 49 (13–72) |
| Gender | |
| Male/female | 54 (74)/19 (26) |
| T stage (AJCC 7th edition) | |
| T1/T2/T3/T4 | 19 (26)/17 (23)/18 (25)/19 (26) |
| N stage (AJCC 7th edition) | |
| N1/N2/N3b | 28 (38)/32 (44)/13 (18) |
| Overall stage (AJCC 7th edition) | |
| II/III/IV | 13 (18)/32 (44)/28 (38) |
| Pathologic classification | |
| Keratinizing squamous cell carcinoma | 3 (4) |
| Non-keratinizing carcinomaa | 62 (85) |
| Unspecified | 8 (11) |
| Radiotherapy dose (Gy) | |
| Median (range) | 68 (54–70) |
| Induction chemotherapy | |
| Yes/no | 20 (27)/53 (73) |
| Concurrent chemoradiotherapy | |
| Yes/no | 69 (95)/4 (6) |
AJCC, American Joint Committee on Cancer.
a
Among 62 patients with non-keratinizing carcinoma, differentiation status was evaluated in 28 patients. The 8 patients had differentiated carcinoma and 20 patients had undifferentiated carcinoma.