Table 3.

ATOM classification [100]

Anatomical characteristics							Time of detection		Mechanism
Anatomic level	Type and extent of injury					Vasculobiliary injury (yes = VBI+) and name of injured vessel (RHA, LHA, CHA, PV, MV); (no = VBI−)	Ei (de visu, bile leak, IOC)	Ep	L	Me	ED
	Occlusion		Division
	C	P*	C	P*	LS**
MBD
1
2
3
4
5
6
NMBD

MBD main biliary duct, NMBD non main biliary duct (Luschka duct, aberrant duct, accessory duct), C complete, P, partial, LS, loss of substance, Me, mechanical, ED energy driven, VBI vasculobiliary involvement, RHA right hepatic artery, LHA left hepatic artery, CHA common hepatic artery, PV portal vein, MV marginal vessels, Ei early intraoperative, Ep early postoperative, L late, OC intra-operative cholangiogram