Primary site T-Stage N0 (%) N1 (%) N2-3(%) Larynx (n=32) T1 60 20 20   T2 56 18 26   T3 39 17 44   T4 40 13 47 Hypopharynx T1* - - - (n=22) T2 28 26 46   T3 16 22 62   T4 20 14 66 Nasopharynx T1 0 25 75 (n=15) T2 25 25 50   T3 25 - 75   T4 33.3 - 66.7   Lips & oral cavity T1 80 20 0 (n=15) T2 66 35 -   T3 50 25 25   T4 33.3 33.3 33.4 Oropharynx T1 33 67 - (n=13) T2 25 25 50   T3 33 - 67   T4 - 33 67 Paranasal sinuses T1* - - - (n=2) T2 - - -   T3 100 0 0   T4* 0 100 0 Parotid gland T1* - - - (n=13) T2* - - -   T3* - - -   T4 0 0 100

Table 4: The probability of cervical metastases (N) related to primary (T) staging in our series.