Table 1.
Patients and tumor characteristics
| Characteristic | Value-n(%) |
|---|---|
|
Age (y) | |
| Mean |
53 |
| Range |
28-78 |
|
Gender (n) | |
| Female |
1 (3.2) |
| Male |
30 (96.8) |
|
Tumor site | |
| NPC |
11 (35.5) |
| Oral cavity |
14 (45.2) |
| Oropharynx |
4 (12.9) |
| Larynx |
1 (3.2) |
| Parotid |
1 (3.2) |
|
Stage (TNM staging system) | |
| T1 |
3 (9.7) |
| T2 |
12 (38.7) |
| T3 |
6 (19.4) |
| T4 |
7 (22.6) |
| Not applicable/Recurrent |
3 (9.6) |
| N0 |
16 (51.7) |
| N1 |
5 (16.1) |
| N2 |
7 (22.6) |
| N3 |
0 (0.0) |
| Not applicable/Recurrent |
3 (9.6) |
|
Dose, Gy/# fractions | |
| |
14 (45.2) 69.2/38 |
| |
1 (3.2) 54.8/30 |
| |
9 (29.1) 59.4/33 |
| |
4 (12.9) 57.6/32 |
| |
1 (3.2) 68.4/38 |
| |
1 (3.2) 70.8/35 |
| |
1 (3.2) 52.2/29 |
|
Parotid gland mean dose | |
| Ipsilateral, mean (range) |
51.7 (26.9-74.8) Gy |
| Contralateral, mean (range) |
36.7 (7.6-57.6) Gy |
|
Surgery before RT | |
| Yes |
16 (51.6) |
| No |
15 (48.4) |
|
Chemotherapy | |
| Yes |
19 (61.3) |
| No |
12 (38.7) |
|
SEF recovery* | |
| Grade 3+ xerostomia |
10 (16.1) |
| No grade 3+ xerostomia |
52 (83.9) |
|
QoL measurement* | |
| Grade 3+ xerostomia |
6 (19.4) |
| No grade 3+ xerostomia | 25 (80.6) |
*SEF recovery and QoL measurement was at 1-year after RT. Grade 3+: ≧grade 3.
Abbreviation: RT radiotherapy, SEF salivary excretion factorm, QoL quality of life.