Table 2 Patient demographics and characteristics

Operation time (minutes)

318.7 ± 54.0

Intraoperative blood loss (ml)

442.3 ± 288.1

Vascular invasion

Portal vein abutment

6

Hepatic artery abutment

5

Portal vein invasion

1

Hepatic artery invasion

1

Type of hepatectomy

Ι+IVb

2

Ι+IVb+V

3

Ι+IV+V

1

Ι+II+III+IV

2

Ι+II+III+IV

1

Perihilar resection

4

Number of bile duct stumps at the hilum after resection

3

2

4

3

5

6

6

1

8

1

Postoperative complications

Post-operative bile leakage

0

Postoperative anastomotic stenosis

0

Ascites

1

Abdominal infection

1

Intra-abdominal collections

3