Table 1 patient baseline characteristics

patient number

16

60

43

prior surgery

5

26

43

visible residual/no prior surgery

15

60

0

R1/Pn+

1

0

43

recurrent tumors

16

26

9

re-irradiation

16

15

1

Stages (TNM 7th edition 2010)

T1

1

8

T2

2

7

T3

4

10

7

T4

12

45

15

Tx

1

6

Not applicable

1

N0

N1

1

N2a

2

N2b

1

3

4

N2c

1

1

histology

adenoid cystic carcinoma

13

52

38

mucoepidermoid carcinoma

1

2

3

acinic cell carcinoma

1

3

adenocarcinoma

1

1

squamous cell carcinoma

1

1

1

MSGT NOS

1

site

base of skull

6

9

1

intracranial extension

2

orbit

1

4

orbit/pterygopalatine fossa

4

2

1

petrous bone

1

nasal cavity

1

1

paranasal sinus

3

16

7

maxilla

1

2

palate

1

6

planum buccale

1

nasopharynx

3

oropharynx

1

external auditory canal

1

2

parotid gland

1

12

17

submandibular gland

2

5

sublingual gland

2

base of tongue

2

lacrimal gland

1