“Hepatic hilum area priority, liver posterior first”: An optimized strategy in laparoscopic resection for type III-IV hilar cholangiocarcinoma

Table 1 Preoperative baseline data of patients

Patient ID	Gender	Age (year)	BMI (kg/m2)	Diagnosis	Bismuth classification	Preoperative PTCD (yes/no)	Preoperative TB (μmol/L)
1	Male	58	19.2	HCCA	IIIb	Yes	22.1
2	Male	66	23.1	HCCA	IIIa	Yes	43.5
3	Male	71	24.1	HCCA	IV	Yes	70.0
4	Male	78	20.2	HCCA	IIIb	Yes	11.9
5	Female	55	21.0	HCCA	IIIb	Yes	19.1
6	Female	50	20.4	HCCA	IIIb	Yes	17.2

HCCA: Hilar cholangiocarcinoma; PTCD: Percutaneous transhepatic cholangiodrainage; BMI: Body mass index; TB: Total bilirubin.

Table 2 Intraoperative and postoperative baseline data of patients

Patient ID	Surgical procedure	Operation time (minutes)	Blood loss (mL)	Complication (yes/no)	Biliary margin negative (yes/no)	Tumor size (cm)	Vascular invasion (yes/no)	TNM stage	Hospital stay (days)
1	LHR + CLR + BA	280	100	Yes, BL	Yes	2.1	No	T2N0M0	8
2	RHR + CLR + BA	310	200	No	Yes	1.8	No	T2N0M0	9
3	CHR + CLR + BA	520	400	Yes, BL	Yes	3.3	No	T2N0M0	10
4	LHR + CLR + BA	360	120	No	Yes	2.0	No	T2N1M0	7
5	LHR + CLR + BA	320	150	No	Yes	1.1	No	T1N0M0	8
6	LHR + CLR + BA	360	200	No	Yes	3.8	Yes	T3N2M0	8

LHR: Left hepatic resection; CLR: Caudate lobe resection; BA: Biliary anastomosis; RHR: Right hepatic resection; CHR: Central hepatic (Couinaud IV, V, and VIII) resection; BL: Bile leakage; TNM: Tumor-node-metastasis.