Table 1.

Clinicopathological features in the study population of 110 nasopharyngeal carcinoma patients with N0 disease, according to the seventh edition of the American Joint Committee on Cancer (AJCC) staging system

Characteristics	Number of patients (%)
Age (years)
< 50	76 (69.1%)
≥50	34(30.9%)
Gender
Male	92 (83.6%)
Female	18 (16.4%)
Pathological features
WHO grade I	1 (0.9%)
WHO grade II/III	109 (99.1%)
T-category
T1	60 (54.5%)
T2	16 (14.5%)
T3	16 (14.5%)
T4	18(16.4%)