Fig. 1From: Perineural invasion as a prognostic factor for intrahepatic cholangiocarcinoma after curative resection and a potential indication for postoperative chemotherapy: a retrospective cohort studyComparison of RFS (a) and OS (b) in patients with and without PNI. PNI, perineural invasion; RFS, recurrence free survival; OS, overall survivalBack to article page
