Table 1 Patients’ characteristics

Age (years)

Median 46 (range:15–78)

Sex

Males

45 (66%)

Females

23 (44%)

T stage

T1

13 (19%)

T2

18 (26%)

T3

11 (16%)

T4

26 (38%)

N stage

N0

11 (16%)

N1

22 (32%)

N2

27 (40%)

N3

8 (12%)

AJCC staging

I

3 (4%)

II

7 (10%)

III

26 (38%)

IV

32 (47%)

Histopathology

Undifferentiated

51 (76%)

Poorly differentiated

17 (16%)

unknown

6 (8%)

EBV positivity

Yes

41(60%)

No

5 (8%)

Unknown

22 (32)