|
Gender (Number of patients)
|
|
female
|
30
|
46.2%
|
|
male
|
35
|
53.8%
|
|
Age at diagnosis (years)
|
|
Median
|
57
| |
|
Range
|
26–83
| |
|
Primary tumor site (Number of patients)
|
|
Parotid Gland
|
36
|
55.4%
|
|
Submandibular Gland
|
11
|
16.9%
|
|
Minor Salivary Glands:
|
18
|
27.7%
|
|
- Nasal cavity/paranasal sinus
|
6
| |
|
- Hard palate
|
3
| |
|
- Tongue/base of tongue
|
5
| |
|
- Meatus acusticus
|
2
| |
|
- Floor of mouth
|
1
| |
|
- Cheek
|
1
| |
|
Histologic Subtypes (Number of patients)
|
|
Adenoidcystic Carcinoma
|
25
|
38.5%
|
|
Mucoepidermoid Carcinoma
|
13
|
20.0%
|
|
Ductal Adenocarcinoma
|
19
|
29.2%
|
|
Adenocarcinoma NOS
|
4
|
6.2%
|
|
Acinic cell carcinoma
|
2
|
3.1%
|
|
other
|
2
|
3.1%
|
|
Tumor stage (Number of Patients)
|
|
pT1
|
9
|
13.8%
|
|
pT2
|
10
|
15.4%
|
|
pT3
|
30
|
46.2%
|
|
pT4
|
16
|
24.6%
|
|
pT4a
|
13
| |
|
pT4b
|
3
| |
|
Primary tumor size (cm)
|
|
Median:
|
2.8
| |
|
Range:
|
1–8.5
| |
|
Nodal Stage (Number of Patients)
|
|
c/pN0
|
27
|
41.5%
|
|
pN1
|
14
|
21.5%
|
|
pN2b
|
24
|
36.9%
|
|
Perinodal Spread (Number of Patients)
|
|
no
|
39
|
60.0%
|
|
yes
|
21
|
32.3%
|
|
unknown
|
5
|
7.7%
|
|
Lymphangiosis (Number of patients)
|
|
L0
|
43
|
66.2%
|
|
L1
|
20
|
30.8%
|
|
Lx
|
2
|
3.1%
|
|
Hemangiosis (Number of patients)
|
|
V0
|
52
|
80.0%
|
|
V1
|
11
|
16.9%
|
|
Vx
|
2
|
3.1%
|
|
Perineural Spread (Number of Patients)
|
|
Pn0
|
6
|
9.2%
|
|
Pn1
|
59
|
90.8%
|
|
Resection margin (Number of Patients)
|
|
R0
|
40
|
61.5%
|
|
R1
|
19
|
29.2%
|
|
R2
|
6
|
9.2%
|
|
Grade of Differentiation (Number of Patients)
|
|
Low-grade
|
6
|
9.2%
|
|
Intermediate-grade
|
11
|
16.9%
|
|
High-grade
|
47
|
72.3%
|
|
Gx
|
1
|
1.5%
|
|
Bone Infiltration of primary tumor
|
|
No
|
59
|
90.8%
|
|
Yes
|
6
|
9.2%
|
|
Neck Dissection (Number of Patients)
|
|
None
|
10
|
15.4%
|
|
Ipsilateral
|
48
|
73.8%
|
|
Bilateral
|
7
|
10.8%
|
|
Radio (chemo) therapy (Number of patients)
|
|
Radiation alone
|
24
|
36.9%
|
|
Radiochemotherapy
|
41
|
63.1%
|
|
Radiation dose (Gy):
|
|
Median: 64
| | |
|
Range: 45–74.2Gy
| | |
|
Radiation technique (Number of patients)
|
|
3D:
|
38
|
58.5%
|
|
IMRT:
|
27
|
41.5%
|
|
Planning target volume (number of patients)
|
|
Primary tumor region
|
11
|
16.9%
|
|
Primary tumor region, ipsilateral neck
|
35
|
53.8%
|
|
Primary tumor region, bilateral neck
|
19
|
29.2%
|
