Journal of Clinical Oncology, Vol 15, 947-954, Copyright © 1997 by American Society of Clinical Oncology

ARTICLES

Resectional surgery of hilar cholangiocarcinoma: a multivariate analysis of prognostic factors

J Klempnauer, GJ Ridder, R von Wasielewski, M Werner, A Weimann and R Pichlmayr
Department of Pathology, Hanover Medical School, Germany.

PURPOSE: To define the prognostic factors after surgical resection of bile duct carcinomas at the hepatic bifurcation. PATIENTS AND METHODS: The retrospective single-center experience details 151 patients after surgical resection of central bile duct carcinoma performed between 1971 and 1995. Tumor removal was accomplished by resection of the bile duct bifurcation either alone (group I, n = 33), in combination with hepatic resection (group II, n = 77), or combined with hepatic and vascular resection (group III, n = 41). Survival analysis was performed by the Kaplan-Meier method and the relationship between each of the clinicopathologic variables and survival was assessed by the log-rank test. Multivariate results were confirmed using Cox regression. RESULTS: The overall hospital mortality rate was 9.9% and depended on the extent of resection (group 1, 6.1%; group II, 7.8%; group III, 17.1%). After exclusion of hospital deaths, the overall patient survival rate was 28.4% at 5 and 15.5% at 10 years, with a median survival duration of 2.05 +/- 0.23 years. Univariate survival analysis identified tumor size, lymph node metastases, residual tumor stage, and tumor grading as factors with a statistically significant prognostic impact. Survival prognosis was not influenced by the site of the tumor according to the classification of Bismuth and Corlette, extent of resection, International Union Against Cancer (UICC) stage, perineural and vascular invasion, age, or sex. In a multivariate Cox analysis, only lymph node metastases and residual tumor stage proved to be of independent prognostic significance. CONCLUSION: Resection of central bile duct carcinoma is feasible in many patients and a favorable outcome after resection is mainly determined by curative resection and the absence of lymph node metastases.

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