Table 1 Patient demographics and characteristics

Gender

Male

4

Female

9

Age (years)

61.9 ± 10.3

Preoperative concurrent diseases

Hypertension

3

Diabetes

2

Cardiovascular and pulmonary disease

1

Cirrhosis

1

Gout

1

Clinical diagnosis

Hilar cholangiocarcinoma

9

Intrahepatic cholangiocarcinoma

3

Gallbladder carcinoma

1

Physical signs

Jaundice

11

Abdominal pain

8

Bismuth-Corlette (only for hilar cholangiocarcinoma)

II

2

IIIa

2

IIIb

1

IV

4

Previous history of surgery

2

Preoperative blood test

CA19-9 (U/L)

334.0 ± 455.0

CEA (ng/L)

40.0 ± 286.2

ALB (g/L)

34.2 ± 4.2

Total bilirubin (µmol/L)

251.9 ± 173.8

PT(s)

12.2 ± 2.2

Preoperative biliary drainage

PTCD

2

None

11