Primary tumor localisation

Oropharynx

260

Floor of the mouth

100

Larynx

106

Hypopharynx

93

Tongue

46

CuP

38

Nasopharynx

24

Paranasal sinus

17

Salivary gland

15

T stage

Tx (CuP)

38

T1

83

T2

220

T3

175

T4

183

N stage

N0

149

N1

71

N2a

27

N2b

211

N2c

207

N3

34

UICC stage

Stage I

22

Stage II

61

Stage III

98

Stage IV

518

Resection status

Definitive treatment

185

R2 resection

75

R1 resection

130

R0 resection

309

Chemotherapy

Without chemotherapy

No indication

133

Contraindication

113

Simultaneous chemotherapy

453