|
Patient Characteristics
| |
Limited field
|
Elective field
|
p-value
|
|---|
| | |
(n = 11)
|
(n = 12)
| |
|---|
|
Gender
|
Female
|
9
|
10
|
1.000*
|
| |
Male
|
2
|
2
| |
|
Age (years)
|
< 45
|
0
|
2
|
0.582*
|
| |
45 - 64
|
5
|
5
| |
| |
≥ 65
|
6
|
5
| |
|
KPS
|
90
|
4
|
6
|
0.680*
|
| |
80
|
7
|
6
| |
|
Histologic type
|
Papillary
|
11
|
8
|
0.093*
|
| |
Poorly differentiated
|
0
|
4
| |
|
Recurrence
|
Primary tumor
|
3
|
5
|
0.667*
|
| |
Recurrent tumor
|
8
|
7
| |
|
T stage at diagnosis
|
T1-2
|
1
|
0
|
0.822*
|
| |
T3
|
6
|
8
| |
| |
T4
|
4
|
4
| |
|
N stage at diagnosis
|
N0
|
3
|
1
|
0.179*
|
| |
N1a
|
6
|
4
| |
| |
N1b
|
2
|
7
| |
|
AJCC Stage at diagnosis
|
I-III
|
7
|
6
|
0.680*
|
| |
IVA
|
4
|
6
| |
|
T stage at pre-EBRT
|
T0-2
|
2
|
2
|
1.000*
|
| |
T3
|
1
|
2
| |
| |
T4
|
8
|
8
| |
|
N stage at pre-EBRT
|
N0
|
2
|
1
|
0.359*
|
| |
N1a
|
3
|
1
| |
| |
N1b
|
6
|
10
| |
|
AJCC Stage at pre-EBRT
|
I-III
|
1
|
2
|
0.640*
|
| |
IVA-B
|
7
|
8
| |
| |
IVC
|
3
|
2
| |
|
Tg level (ng/mL)
|
Median (range)
|
13.5 (2.7-449)
|
10.7 (0.2-1411)
|
0.257†
|
| |
Mean ± SD
|
76.8 ± 137.7
|
232.3 ± 431.7
| |
| |
< 10
|
5
|
6
|
1.000*
|
| |
≥ 10
|
6
|
6
| |
|
Thyroid surgery
|
Subtotal thyroidectomy
|
2
|
2
|
1.000*
|
| |
Total thyroidectomy
|
9
|
10
| |
|
Lymph node surgery
|
CND
|
3
|
3
|
1.000*
|
| |
CND+Unilateral SND/MRND
|
7
|
7
| |
| |
CND+Bilateral SND/MRND
|
1
|
2
| |
|
Postoperative residuum
|
R0-1
|
2
|
3
|
1.000*
|
| |
R2
|
9
|
9
| |
|
Radioiodine treatment
|
No
|
1
|
3
|
0.590*
|
| |
Yes
|
10
|
9
| |
|
EBRT dose (EQD2, Gy)
|
Median (range)
|
62.5 (62.5-67.7)
|
62.5 (60-69)
|
0.110†
|
| |
Mean ± standard deviation
|
63.3 ± 1.8
|
65.1 ± 3.1
| |
|
EBRT techniques
|
3DCRT
|
3
|
3
|
1.000*
|
| |
IMRT
|
8
|
9
| |
- Abbreviation: 3DCRT = 3-dimensional conformal radiotherapy; IMRT = intensity modulated radiotherapy; same as in Table 1.
- *Fisher's exact test.
- †t-test.
