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Table 1 Huang classification

From: Intrahepatic bile duct variation: MR cholangiography and implication in hepatobiliary surgery

Variant typeSite of opening of tight posterior hepatic duct (RPHD)
Huang A1The right anterior hepatic duct (RAHD)
Huang A2The hepatic confluence (trifurcation)
Huang A3The left hepatic duct (LHD)
Huang A4The main hepatic duct (MHD)
Huang A5The cystic duct