Table 1 Demographic and clinical variables

Age(years)

58.0 ± 11.3

Sex ratio (M: F)

12 : 5

Smoke (n [%])

4(23)

Alcohol abuse (n [%])

5(29)

Family history of tumors (n [%])

3(17)

BMI (kg/m²)

23.8 ± 2.3

Cholangitis manifestations (n [%])

 Abdominal pain

 Jaundice

 Fever

8(47)

7(41)

2(12)

Choledocholithiasis (n [%])

6(35)

Laboratory tests

Total bilirubin (µmol/L)

Direct Bilirubin (µmol/L)

Alkaline phosphatase (U/L)

γ-glutamyl transpeptidase(U/L)

CA19-9 (µ/ml)

16.7(8.9,113.5)

3.8(2.7,100.9)

134.4(69.5,300.3)

103.4(28.1,294.1)

12.1(7.6,83.8)

Dilation of the bile ducts (n [%])

15(88)

Surgical approach (n [%])

Radical pancreaticoduodenectomy

Radical resection for hilar cholangiocarcinoma

16(94)

1(6)

AH involvement sites (n [%])

Common bile duct

 Proximal

 Distal

 Ampulla of Vater

Both CBD and AoV

8(47)

1(6)

7(41)

8(47)

1(6)

Cancer (n [%])

3(18)

Mucosal glandular dysplasia (n [%])

8(47)