Table 2.

Patient information from the Sun Yat-sen University Cancer Center (n=40 patients).

Variables		No. Patients (%)
Gender
	Female	40 (100.0%)
	Male	0 (0.0%)
Age (y)
	≤ 55	29 (72.5%)
	>55	11 (27.5%)
Tumor size
	T1	3 (7.5%)
	T2	28 (70.0%)
	T3	5 (12.5%)
	T4	4 (10.0%)
Nodal status
	N0	16 (40.0%)
	N1	10 (25.0%)
	N2	9 (22.5%)
	N3	5 (12.5%)
Metastasis
	M0	36 (90.0%)
	M1	2 (5.0%)
	Mx	2 (5.0%)
Pathological grade
	G1	6 (15.0%)
	G2	12 (30.0%)
	G3	22 (55.0%)
Stage
	I	3 (7.5%)
	II	16 (40.0%)
	III	19 (47.5%)
	IV	2 (5.0%)
Ki-67
	< 15%	11 (27.5%)
	≥ 15%	29 (72.5%)