Application of multiple Roux-en-Y hepaticojejunostomy reconstruction by formation of bile hilar duct lake in the operation of hilar cholangiocarcinoma

Table 1 Bile duct lake formation and vascular reconstruction in different Bismuth-type cases

Number of bile duct lakes	Number of bile duct openings	Bismuth type				Vascular reconstruction
		I	II	IIIa + IIIIb	IV	Portal vein	Hepatic artery
1	2–4	6	9	7	0	6	8
2	3–7	0	10	21	3	8	10
3	6–9	0	0	9	11	9	6