Table 1.

Clinicopathological characteristics in esophageal squamous cell carcinoma patients (n = 20)

Patient characteristics	Cases (n = 20)
Sex
Male	13
Female	7
Age
<  65	12
≥ 65	8
Tumor size (cm)
<  4	14
≥ 4	6
Histological grade
G1	11
G2 + G3	9
TNM stage
I/II	16
III/IV	4

TNM tumor node metastasis