Table 1.
Characteristics of NPC patients after RT enrolled in the study.
| Characteristics | ORN (n = 21) | Metastasis (n = 14) |
|---|---|---|
| Median age (range) | 51 (30–80) years | 43 (23–65) years |
| Male/Female | 17/4 | 9/5 |
| RT dose (rang) | 81 (68–154) Gy | 74 (58–128) Gy |
| Median interval between RT and lesion detection (rang) | 10 (2–96) months | 10 (4–24) months |
| Overall stage# | ||
| I | 6 (28.6%) | 1 (7.2%) |
| II | 8 (38.1%) | 3 (21.4%) |
| III | 5 (23.8%) | 7 (50.0%) |
| IV | 2 (9.5%) | 3 (21.4%) |
| Received repeat rt to the neck | ||
| Yes | 5 (23.8%) | 1 (7.2%) |
| No | 16 (76.2%) | 13 (92.8%) |
| Clinical symptoms* | ||
| Neck pain | 16 (76.2%) | 9 (64.3%) |
| Infection | 6 (28.6%) | 1 (7.2%) |
| Asymptomatic | 5 (23.8%) | 6 (42.8%) |
| Involvement of multiple lesions | ||
| Yes | 14 (66.7%) | 8 (57.1%) |
| No | 7 (33.3%) | 6 (42.9%) |
#
According to the 7th UICC/AJCC staging system.
*
A patient may show neck pain with infection.
ORN, osteoradionecrosis.