Hanover classification for postcholecystectomy biliary injuries^[1]

Type	Description
A	Peripheral bile leakage from cystic duct or gallbladder bed
B	Stenosis of the main bile duct without injury (ie, caused by a surgical clip)
C	Tangential injury of the common bile duct (above or below the hepatic bifurcation)
D	Completely transected bile duct (above or below the hepatic bifurcation)
E	Stricture of the main bile duct

Reference:

Bektas H, Schrem H, Winny M, Klempnauer J. Surgical treatment and outcome of iatrogenic bile duct lesions after cholecystectomy and the impact of different clinical classification systems. Br J Surg 2007; 94:1119.

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Hanover classification for postcholecystectomy biliary injuries[1]