Oral contraceptives and liver hemangioma: a case-control study
2004
Objective. To study whether there is an epidemiological association between liver hemangiomas and oral contraception use, as may be suggested by clinical observations of liver hemangioma growth during pregnancy and under estrogen administration. Methods. A case-control study of 40 women with liver hemangiomas, as diagnosed by imaging studies [ultrasonography (US) or computed tomography (CT) and nuclear scan], and 109 age-matched control with normal studies. The women were interviewed with respect to their menstrual, reproductive and oral contraception use history. Results. The liver hemangioma and control groups did not differ significantly with regard to their menstrual or reproductive history. Ever oral contraception use was reported by 30% of the cases and 27% of controls. The odds ratio (OR) was 1.1 [95% confidence interval (CI) 0.52-2.60] for ever use, 1.64 (95% CI 0.37-7.13) for initiation before the age of 20, and 0.62 (95% CI 0.16-2.42) for use duration of less than 1 year. On the multivariate ana...
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