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Overall survival curves of hepatitis B virus-associated intrahepatic cholangiocarcinoma patients without lymph node involvement. There was no survival difference between lymph node sampling and regional LND groups (P = 0.182). There was no statistically significant difference in overall survival between LND (-) and lymph node sampling groups (P = 0.709). There were also no significant differences between LND (-) and regional LND groups (P = 0.309). LND: Lymph node dissection.
