Fig. 6From: Peritumoral ductular reaction can be a prognostic factor for intrahepatic cholangiocarcinomaMicroenvironment in the different peritumoral DR groups and tumor group. a The obvious DR group had more abundant ECM and α-SMA-positive vessels in peritumoral areas than in the mild DR group, and tumor group had similar microenvironment with the obvious DR group. b The correlation analysis illustrated that the DR grade was positively related to the portal/septal α-SMA levelBack to article page