Abstract
To evaluate the influence of various clinicopathologic factors on survival, a computer analysis was performed on 70 patients who underwent resection for bile duct carcinoma. Univariate analysis of overall survival involving all the patients identified 10 factors that were associated with a significant outcome: location of primary lesion (p = 0.01), pancreatic invasion (p = 0.004), duodenal invasion (p = 0.005), macroscopic and microscopic vascular involvement (p = 0.009 and p = 0.04), perineural invasion (p = 0.02), lymphatic vessel involvement (p = 0.04), lymph node metastasis (p = 0.02), histologic type (p = 0.02), and depth of cancer invasion (p = 0.04). However, when the interactive effects of these factors were taken into account, the pancreatic invasion and perineural invasion were selected as the two most significant prognostic factors in a multivariate analysis using the Cox stepwise proportional hazards model. The age, sex, size of the tumor, macroscopic type of lesions, hepatic infiltration, serosal invasion, resected surgical margin at the proximal and distal ends, exposed surgical margin, peritoneal dissemination, and hepatic metastasis were not significantly associated with prognosis.
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