Overexpression of Ets-like protein 1 in human esophageal squamous cell carcinoma

Table 1 Clinical and histopathological characteristics of patients

Characteristic	n (%)
Sex
Male	79 (73.8)
Female	28 (26.2)
Location of tumor
Upper thoracic	14 (13.1)
Middle thoracic	60 (56.1)
Lower thoracic	33 (30.8)
Degree of differentiation
Well-differentiated	8 (7.5)
Moderately-differentiated	74 (69.2)
Poorly-differentiated	25 (23.3)
Depth of invasion
T1	6 (5.6)
T2	39 (36.4)
T3	62 (58.0)
T4	0 (0)
Lymph node metastasis
Positive	35 (32.7)
Negative	72 (67.2)

Table 2 Relationship between clinicopathologic parameters and expression of Elk-1

Type	Case	Elk-1		P
		Preserved	Increased
Degree of differentiation
Well-differentiated	8	1	7	> 0.05
Moderately-differentiated	74	14	60
Poorly-differentiated	25	6	19
Depth of invasion
Mucous layer (T1)	6	1	5	> 0.05
Muscular layer (T2)	39	6	33
Full-thickness (T3)	62	14	48
Lymph node metastases
Positive	35	5	30	> 0.05
Negative	72	16	56