Table 2.

Summary of the most commonly used BDI classification systems

	BDI classification systems
	Bismuth [92, 93]	Strasberg [90]	McMahon [94]	Bergman [95]	Csendes [97]	Stewart-Way [98, 103]	Hannover [17]	Lau [99]	ATOM [100]
Bile leakage
Cystic duct leak or leaks from small ducts in liver bed		A		A	Type I		Type A	Type 1	NMBD
Occlusion of an aberrant RHD		B						Type 2
Leak from an aberrant RHD		C
Lateral injury to CBD < 50% diameter		D						Type 2
Laceration > 25% of CBD			Major bile duct injury	B
Transection of CBD or CHD			Major bile duct injury	D	Type III	Class II/III	Type D	Type 3
Resection od more than 10 mm of the CBD					Type IV
Tangential injury of the CBD							Type C
Right/left hepatic duct or sectoral duct injuries								Type 4
Laceration < 25% of CBD			Minor bile duct injury			Class I
Laceration of cystic-CBD junction			Minor bile duct injury		Type II
Bile stricture
Stenosis of the main bile duct without injury (caused by a clip)							Type B
CBD stump > 2 cm	Type I	EI							MBD 1
CBD stump < 2 cm	Type II	E2							MBD 2
Ceiling of the biliary confluence is intact	Type III	E3							MBD 3
Ceiling of the confluence is destroyed	Type IV	E4							MBD 4
Type I, II or III + stricture of an isolated right duct	Type V	E5
Development of post-operative CBD stricture			Major bile duct injury	C			Type E
Vascular lesion
Right hepatic artery + RHD transected						Class IV	Type D	Type 5	VBI+

RHD right hepatic duct, CBD common bile duct, CHD common hepatic duct, NMBD non-main bile duct, MBD main bile duct, VBI vasculobiliary injury