The association between tamoxifen and the development of hepatocellular carcinoma: case report and literature review.
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Tamoxifen has become one of the most widely used drugs in the treatment of breast cancer, and concerns about its long-term safety and efficacy are being raised. Investigations in rats have suggested an association between the administration of tamoxifen and the development of hepatocellular carcinoma. However, no studies to date have demonstrated an increased incidence of hepatocellular carcinoma in women treated with tamoxifen. In the case reported, a 56-year-old woman presented with hepatocellular tumours after 6 years of tamoxifen therapy for breast cancer. The patient had no other risk factors for the development of hepatocellular carcinoma. She underwent successful resection of the lesions, and subsequent pathological studies confirmed hepatocellular carcinoma with a trabecular growth pattern similar to the histologic pattern seen in tamoxifen-induced hepatocellular carcinoma occurring in rat models.
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