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Risk of Hepatocellular Carcinoma in Workers Exposed to Chemicals

AUTHORS

Mario Uccello 1 , Giulia Malaguarnera 1 , * , Thea Corriere 1 , Antonio Biondi 2 , Francesco Basile 2 , Mariano Malaguarnera 1

AUTHORS INFORMATION

1 Research Center The Great Senescence, University of Catania, malaguar@unict.it, Italy

2 Department of General Surgery, University of Catania, Italy

How to Cite: Uccello M, Malaguarnera G, Corriere T, Biondi A, Basile F, et al. Risk of Hepatocellular Carcinoma in Workers Exposed to Chemicals, Hepat Mon. 2012 ; 12(10):5943. doi: 10.5812/hepatmon.5943.

ARTICLE INFORMATION

Hepatitis Monthly: 12 (10); 5943
Published Online: October 11, 2012
Article Type: Review Article
Received: July 20, 2011
Accepted: October 8, 2011
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Abstract

Context: Studies on experimental animals have shown liver is a common target of chemical carcinogens; this might suggest that occupational exposure to chemicals is another risk factor for HCC. However, the relationship between occupation and liver cancer has not been extensively studied, with the exception of the known association between vinyl chloride and angiosarcoma of the liver.

Evidence Acquisition: A MEDLINE and conventional search of the past 50 years of the medical literature was performed to identify relevant articles on incidence and mechanisms of HCC due to occupational exposure to chemicals. Several important edited books and monographs were also identified and reviewed.

Results: While laboratory data clearly indicate that the liver is an important target of chemical carcinogenesis, epidemiological studies provide very limited evidence on occupational risk factors for HCC. Nevertheless, we found some case reports and epidemiological data showing a moderately increased risk of HCC development in people exposed to vinyl chloride, organic solvents, pesticides, polychlorinated biphenyls, and arsenic.

Conclusions: Occupational exposure to chemicals may be another risk factor for HCC development, but the interpretation of currently available findings is limited by the small number of studies, questionable accuracy of the diagnosis of liver cancer, and potential confounding or modifying factors such as chronic hepatitis virus infection and alcohol consumption. Further relevant investigations are required for clarifying the actual contribution of occupational exposure to chemicals in HCC development.

Keywords

Carcinoma, Hepatocellular Occupational Exposure Vinyl Chloride Solvents Pesticides Polychlorinated Biphenyls Arsenic

© 2012, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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