Table 1.

EpCAM expression in primary adenocarcinoma of the gastrointestinal tract

Tumour type (no. of samples)	No EpCAM overexpression*				EpCAM overexpression*
	No expression (TIS 0)		Weak expression (TIS 1–4)		Moderate expression (TIS 6, 8)		Intense expression (TIS 9, 12)
	n	%	n	%	n	%	n	%
Colon cancer (104)	0	0	7	6	12	12	85	82
Ampullary cancer (34)	0	0	5	15	14	41	15	44
Gastric cancer (73)	3	4	16	22	14	19	40	55
Oesophageal cancer (43)	5	12	10	23	11	26	17	39
Gallbladder cancer (128)	9	7	34	27	53	41	32	25
Pancreatic cancer (203)	2	1	71	35	56	26	74	37
Hepatocellular carcinoma (47)	40	86	3	6	2	4	2	4

EpCAM expression was determined by immunohistochemistry.

^*EpCAM overexpression defined by Gastl et al³.

EpCAM, epithelial cell adhesion molecule; TIS, total immunostaining score.