Table 1.

Blotting index of CCA cases with tumor stage, location, sex, and age.

	Total	Blotting index (case no, %)
		<0.25	0.25-0.5	>0.5
Normal	28	28(100%)	–	–
CCA	42	9(21.43%)	16(38.09%)	17(40.48%)
Clinical stage
Stage I	8	–	7(88.89%)	1(11.11%)
Stage II~IV	34	9(26.47%)	9(26.47%)	16(47.06%)
Tumor location
EHCC	31	6(19.35%)	10(32.26%)	15(48.39%)
IHCC	11	3(27.27%)	6(54.55%)	2(10.18%)
Sex
Male	29	7(24.14%)	12(41.38%)	10(34.48%)
Female	13	2(15.39%)	4(30.77%)	7(53.84%)
Age
40~50	1	–	–	1(100%)
50~60	6	2(33.33%)	2(33.33%)	2(33.33%)
60~70	13	4(30.77%)	7(53.85%)	2(15.38%)
70~80	20	3(15%)	6(30%)	11(55%)
80~90	2	–	1(50%)	1(50%)

CCA, cholangiocarcinoma; EHCC, extrahepatic cholangiocarcinoma; IHCC, intrahepatic cholangiocarcinoma.