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Table 2
Summary of immunohistochemical expression of arginase-1and HepPar-1 in all the studied cases
	Arginase-1				HepPar-1
	Negative	Positive		Total positive	Negative	Positive		Total positive
	0 (%)	1+(%)	2+(%)	No (%)	0(%)	1+(%)	2+(%)	No (%)
Hepatocellular carcinoma (HCC), (no=50):	8 (16)	19 (38)	23 (46)	42 (84)	15 (30)	16 (32)	19 (38)	35 (70)
well differentiated (no=11)	0 (0)	3 (27.3)	8 (72.7)	11 (100)	0 (0)	4 (36.4)	7 (63.6)	11 (100)
moderately differentiated (no=30)	3 (10)	12 (40)	15 (50)	27 (90)	8 (26.7)	10 (33.3)	12 (40)	22 (73.3)
poorly differentiated (no=9)	5 (55.6)	4 (44.4)	0 (0)	4 (44.4)	7 (77.8)	2 (22.2)	0 (0)	2 (22.2)
Metastatic carcinoma (MC) (no=38)	37 (97.4)	1 (2.6)	0 (0)	1 (2.6)	32 (84.2)	2 (5.3)	4 (10.5)	6 (15.8)
Colonic (no=25)	25 (100)	(0)	0 (0)	0 (0)	22 (88)	1 (4)	2 (8)	3 (12)
Gastric (no=6)	6 (100)	0 (0)	0 (0)	0 (0)	3 (50)	1 (16.7)	2 (33.3)	3 (50)
Renal cell carcinoma (no=2)	2 (100)	0 (0)	0 (0)	0 (0)	2 (100)	0 (0)	0 (0)	0 (0)
Pancreas (no=2)	1 (50)	1 (50)	0 (0)	1 (50)	2 (100)	0 (0)	0 (0)	0 (0)
Lung (no=2)	2 (100)	0 (0)	0 (0)	0 (0)	2 (100)	0 (0)	0 (0)	0 (0)
Gall bladder (no=1)	1 (100)	0 (0)	0 (0)	0 (0)	1 (100)	0 (0)	0 (0)	0 (0)
Cholangiocarcinoma (no=12)	11 (91.7)	1 (8.3)	0 (0)	1 (8.3)	10 (83.3)	1 (8.3)	1 (8.3)	2 (16.7)
Non-neoplastic cirrhotic liver tissues adjacent to HCC(no=42)	0 (0)	0 (0)	42 (100)	42 (100)	0 (0)	0 (0)	42 (100)	42 (100)
Non-neoplastic liver tissue adjacent to MC (no= 9)	0 (0)	0 (0)	9 (100)	9 (100)	0 (0)	0 (0)	9 (100)	9 (100)
Normal liver tissues (no=10)	0 (0)	0 (0)	10 (100)	10 (100)	0 (0)	0 (0)	10 (100)	10 (100)

HepPar-1=hepatocyte paraffin antigen-1.

Radwan and Ahmed Diagnostic Pathology 2012 7:149 doi:10.1186/1746-1596-7-149

Table 2