Table 2 Characteristics of patients between cholangiocarcinoma and pancreatic head cancer

Age (years)

71.97 ± 9.72

65.38 ± 10.90

0.019*

Sex (male to female)

20:14

19:5

0.104

Total bilirubin (mg/dL)

9.55 ± 6.57

8.49 ± 6.68

0.551

CEA (ng/mL)

25.61 ± 80.56

9.49 ± 17.80

0.369

CA 19-9 (U/mL)

411.09 ± 992.54

4441.51 ± 7462.84

0.017*

Alkaline phosphatase (U/L)

359.34 ± 338.81

269.43 ± 137.32

0.254

Stricture level (CBD:CHD)

15:19

24:0

<0.001*

Numbers of specimens

4.61 ± 1.52

4.55 ± 1.77

0.895

Specimens <5: ≥5

17:17

9:15

0.585