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Published in: Surgery Today 2/2017

01-02-2017 | Original Article

Adjuvant gemcitabine monotherapy for resectable perihilar cholangiocarcinoma with lymph node involvement: a propensity score matching analysis

Authors: Takashi Mizuno, Tomoki Ebata, Yukihiro Yokoyama, Tsuyoshi Igami, Gen Sugawara, Junpei Yamaguchi, Masato Nagino

Published in: Surgery Today | Issue 2/2017

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Abstract

Purpose

The aim of this study was to evaluate the efficacy of adjuvant gemcitabine monotherapy following resection for perihilar cholangiocarcinoma with lymph node involvement.

Methods

We performed a retrospective analysis of 180 patients undergoing resection for perihilar cholangiocarcinoma with lymph node involvement between 2001 and 2012. The patients were divided into two groups according to the presence (n = 67) or absence (n = 113) of adjuvant gemcitabine monotherapy. Univariate and multivariate analyses were performed followed by a propensity score matching analysis to adjust for the differences in the baseline characteristics of the groups.

Results

The overall survival rates after surgery and the median survival times in patients who were treated with adjuvant chemotherapy were significantly longer than those who were treated without adjuvant chemotherapy (32.9 vs. 15.0 % at 5 years, 37 vs. 20 months, P = 0.001). A multivariate analysis indicated that adjuvant chemotherapy, a residual microscopic tumor, and pathological T stage were independent prognostic factors for survival. After two new cohorts of 32 patients were generated following 1:1 propensity score matching, the overall survival rate in the adjuvant chemotherapy group was found to be significantly longer than that in the surgery alone group (43.2 vs. 15.6 % at 5 years, P = 0.001).

Conclusion

Adjuvant gemcitabine monotherapy may improve survival in node-positive perihilar cholangiocarcinoma patients.
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Metadata
Title
Adjuvant gemcitabine monotherapy for resectable perihilar cholangiocarcinoma with lymph node involvement: a propensity score matching analysis
Authors
Takashi Mizuno
Tomoki Ebata
Yukihiro Yokoyama
Tsuyoshi Igami
Gen Sugawara
Junpei Yamaguchi
Masato Nagino
Publication date
01-02-2017
Publisher
Springer Japan
Published in
Surgery Today / Issue 2/2017
Print ISSN: 0941-1291
Electronic ISSN: 1436-2813
DOI
https://doi.org/10.1007/s00595-016-1354-0

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