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. 2009 May;49(5):1563-70.
doi: 10.1002/hep.22793.

Association between hypothyroidism and hepatocellular carcinoma: a case-control study in the United States

Affiliations

Association between hypothyroidism and hepatocellular carcinoma: a case-control study in the United States

Manal M Hassan et al. Hepatology. 2009 May.

Abstract

Thyroid hormones play an essential role in lipid mobilization, lipid degradation, and fatty acid oxidation. Hypothyroidism has been associated with nonalcoholic steatohepatitis; however, the association between thyroid diseases and hepatocellular carcinoma (HCC) in men and women has not been well established. We investigated the association between hypothyroidism and HCC risk in men and women in a case-control study, which included 420 eligible patients with HCC and 1104 healthy controls. We used multivariate unconditional logistic regression models to control for the confounding effects of established HCC risk factors. A long-term history of hypothyroidism (>10 years) was associated with a statistically significant high risk of HCC in women; after adjusting for demographic factors, diabetes, hepatitis, alcohol consumption, cigarette smoking, and family history of cancer, the odds ratio (OR) was 2.9 (95% confidence interval [CI], 1.3-6.3). Restricted analyses among hepatitis virus-negative subjects, nondrinkers, nondiabetics, nonsmokers, and nonobese individuals indicated a significant association between hypothyroidism and HCC, with an approximate two-fold to three-fold increased risk of HCC development. We observed risk modification among women with diabetes mellitus (OR = 9.4; 95% CI = 2.7-32.7) and chronic hepatitis virus infection (OR = 31.2; 95% CI = 6.3-153.2). A history of hyperthyroidism was not significantly related to HCC (OR = 1.7; CI = 0.6-5.1). We noted significant elevated risk association between hypothyroidism and HCC in women that was independent of established HCC risk factors. Experimental investigations are necessary for thorough assessment of the relationship between thyroid disorders and HCC.

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Conflict of interest statement

Potential conflict of interest: Nothing to report.

Figures

Fig. 1
Fig. 1
(A) The estimated AOR (95% CI) for the association between hypothyroidism and HCC after adjustment for ail established HCC risk factors and for prior history of obesity at different ages. (B) Estimated AOR (95% CI) for the association between hypothyroidism and HCC after adjustment for all established HCC risk factors in all subjects and in subgroups of nondrinkers, non-virus infected subjects, nondiabetics, and nonsmokers.

Comment in

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