All vascular and bile duct invasions were recorded separately according to the vessels invaded (i.e. portal vein, hepatic artery, hepatic vein, and bile duct). Microvascular invasion was defined ...

They often manifest as a concentric thickening of the bile duct, coupled with infiltration ... biliary and ipsilateral portal vein involvement ± ipsilateral hepatic lobar atrophy T3 Tumor ...