Table 1.

Baseline characteristics of the patients studied.

	Number	Rate
Gender
Male	114	77.03
Female	34	22.97
Age	58 ± 7.56
Tumor local
Upper	9	6.08
Middle	101	68.24
Lower	38	25.68
Tumor size	5 ± 2.05
pTNM stage
1	5	3.38
2	59	39.86
3	80	54.05
4	4	2.70
Lymph node metastasis
Negative	54	36.49
Positive	94	63.51
Differentiation grade
Well	89	60.13
Poor	53	35.81
Undifferentiated	6	4.06
Folate receptor 4
Negative	48	32.43
Positive	100	67.57