Table 1. Patient characteristics.

Characteristics	Case no. (n = 110)	%
Age (years)
≤60 years	57	52
>60 years	53	48
Sex
Male	91	83
Female	19	17
Tumor locationa
Upper	8	7
Middle	68	62
Lower	32	29
Tumor size (cm)
≤4 cm	24	22
>4 cm	86	76
Differentiation
Well	24	22
Moderate-poor	84	76
Clinic stage
I–II	81	74
III	26	24
LN metastasis
Negative	75	68
Positive	35	32

Note: LN: lymph node;

^aPosition in the esophagus.