Abstract
Purpose
There is still debated regarding the optimal treatment strategy for cholangiocarcinoma (CC) after curative resection. The aim of this study was to analyze the role of adjuvant therapy in R0-resected intrahepatic and perihilar CCs.
Methods
We retrospectively reviewed the patients who underwent R0 resection for intrahepatic and perihilar CCs between January 2001 and December 2013 at six tertiary medical centers; adjuvant therapy consisted of chemotherapy (CT), chemoradiotherapy (CRT), or radiotherapy (RT). The outcomes of our study were recurrence-free survival (RFS) and overall survival (OS).
Results
We included a total of 137 consecutive patients in the analysis; 58.4% of them had intrahepatic CCs, and 25.5% had lymph node (LN) involvement. Seventy-three patients (53.3%) had received adjuvant therapy (CT, CRT, RT: 48, 13, 12, respectively), and most patients who had received adjuvant therapy had stage III or IVA, T3 or 4 tumors, and positive LNs. Multivariable analysis identified positive LN [hazard ratio (HR) 3.47; P < 0.001] and high baseline CA 19-9 level (HR 1.82; P = 0.027) as predictors of decreased OS. The effects of adjuvant therapy varied according to the treatment modality; adjuvant CRT showed significantly longer RFS than surgery only (HR 0.44; P = 0.036), with a nonsignificant trend for better OS (HR 0.46; P = 0.115).
Conclusions
Adjuvant CT and RT were not associated with a survival advantage in R0-resected intrahepatic and perihilar CCs. CRT appears to be appropriate treatment after complete resection.
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This paper was supported by the Dong-a University Research Fund.
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Kim, Y.S., Oh, S.Y., Go, SI. et al. The role of adjuvant therapy after R0 resection for patients with intrahepatic and perihilar cholangiocarcinomas. Cancer Chemother Pharmacol 79, 99–106 (2017). https://doi.org/10.1007/s00280-016-3206-4
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DOI: https://doi.org/10.1007/s00280-016-3206-4