Table 1.
Characteristics of 110 patients with T4 stage NPC.
| Patient characteristics | Number of patients (%) |
|---|---|
| Age (y) | |
| Range | 17–69 |
| Median | 44.5 |
| Gender | |
| Male | 87 (79.1) |
| Female | 23 (20.9) |
| N stage | |
| N0-1 | 35 (31.8) |
| N2-3 | 75 (68.2) |
| GTVnx (cc) | |
| Range | 22.37–246.10 |
| Median | 77.27 |
| GTVln (cc) | |
| Range | 0–180.15 |
| Median | 14.1 |
| IMRT replanning | |
| No | 63 (57.3) |
| Yes | 47 (42.7) |
| Chemotherapy | |
| Concurrent | 75 (68.2) |
| Induction plus concurrent | 35 (31.8) |
| Targeted therapy | |
| No | 83 (75.5) |
| Yes | 27 (24.5) |
| Metastasis to RLN | |
| No | 13 (11.8) |
| Yes | 97 (88.2) |
| Cervical nodal necrosis | |
| No | 68 (61.8) |
| Yes | 42 (38.2) |
GTVnx, gross tumor volume of the nasopharynx; GTVln, gross tumor volume of the lymph nodes; IMRT, intensity-modulated radiotherapy; RLN, retropharyngeal lymph nodes.