Table I.

Clinical and pathological features of patients with nasopharyngeal carcinoma (mean age, 44 years; range, 28–61 years).

Characteristic	Number of cases
Total	20
Gender
Male	16
Female	4
Degree of differentiation
Differentiated	6
Undifferentiated	14
Primary tumor stage
T1	3
T2	10
T3	5
T4	2
Union for International Cancer Control clinical stage
I	0
II	3
III	15
IV	2