“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.