Expression of a plant-associated human cancer antigen in normal, premalignant and malignant esophageal tissues

Table 1 Expression of the plant-associated human cancer antigen in different esophageal tissues

Esophageal tissues	Total cases	Positive staining	Negative staining	%Positive
Normal	29	0	18	0
Hyperplasia	29	2	27	6.9
Dysplasia
Mild	30	8	22	26.7
Moderate	27	17	10	63.0
Severe	29	23	6	79.3
aCIN	30	24	6	80.0

^aCIN: Carcinoma in situ.

Table 2 Staining intensity of the plant-associated human cancer antigen expressed in different esophageal tissues

Histologic diagnisis	Total cases	Staining intensitya	Biopsies staining with intensity > 2 (%)
Normal	29	0	0
Dysplasia
Mild	30	0.270.52	3.3
Moderate	27	1.000.93	25.9
Severe	29	1.380.96	41.4
CIN	30	1.330.92	43.3

^aExpressed as mean staining intensity standard deviation. Intensity of staining was graded on a scale of 0 to 3.