Table 1. Clinicopathological characteristics of 20 patients with maxillary sinus squamous cell carcinoma.

No.	Age (years)	Gender	Differentiation	T	N	M	Stage
1	65	Female	Poor	4b	0	0	IVB
2	65	Male	Moderate	4a	0	0	IVA
3	74	Male	Well	4a	0	0	IVA
4	71	Male	Moderate	3	1	0	III
5	67	Male	Moderate	4a	0	0	IVA
6	68	Male	Well	4b	0	0	IVB
7	77	Male	Poor	3	0	0	III
8	76	Male	Moderate	3	0	0	III
9	61	Male	Well	3	0	0	III
10	54	Male	Poor	3	0	0	III
11	64	Male	Poor	4b	0	0	IVB
12	64	Male	Moderate	4a	0	0	IVA
13	80	Male	Moderate	4a	0	0	IVA
14	66	Female	Poor	4a	2c	0	IVA
15	60	Male	Poor	4a	0	0	IVA
16	66	Female	Moderate	4a	0	0	IVA
17	85	Male	Poor	4a	0	0	IVA
18	69	Male	Well	4a	0	0	IVA
19	57	Male	Poor	4a	0	0	IVA
20	69	Male	Poor	4a	2b	0	IVA