Journal
JOURNAL OF HEPATOLOGY
Volume 44, Issue 6, Pages 1066-1073Publisher
ELSEVIER
DOI: 10.1016/j.jhep.2005.11.040
Keywords
cholangiocarcinoma; clonorchis sinensis; risk factors; case-control studies
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Background/Aims: The authors conducted a hospital-based case-control study to evaluate the role of Clonorchis sinensis infection as a risk factor for the development of cholangiocarcinoma (CC), including extrahepatic CC, in Korea. Methods: Cases of 185 patients with CC (intrahepatic, 51; hilar, 53; and distal extrahepatic, 81) and matched controls underwent stool microscopy, pathological examinations, serologic test for C. sinensis using ELISA, skin test for C. sinensis, radiologic examinations, and interview concerning history of eating raw freshwater fish. Results: Radiologic evidence of C. sinensis, history of eating raw freshwater fish, and positive serologic result for C. sinensis were found to be related to an increased risk of CC, with the odds ratios (OR)= 8.615 (95% confidence interval [CI]=5.045-16.062), OR=2.385 (95% CI=1.527-3.832), and OR=2.272 (95% CI=1.147-4.811), respectively. The risk factors for distal extrahepatic CC were radiologic evidence of C. sinensis (OR = 6.571; 95 % CI = 3.17015.943) and history of eating raw freshwater fish (OR = 2.6; 95 % CI = 1.294-5.66). Conclusions: Radiologic evidence of C. sinensis, history of eating raw freshwater fish and positive serologic result for C. sinensis were significantly associated with CC, including extrahepatic CC. (c) 2005 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.
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