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Expression of steroid hormone receptors in benign hepatic tumors. An immunocytochemical study.
Archives of Pathology & Laboratory Medicine 1992 December
Many hepatic adenomas have been demonstrated to have a clear relationship with oral contraceptive use, and it is presumed that there may be hormone receptors within the cytoplasm or nucleus of adenoma cells that mediate tumor growth in response to hormonal stimulation. Only a small number of examples of benign hepatic tumors have been analyzed for the presence of estrogen and progesterone receptors, and there has been a lack of consensus with regard to the findings. All previous studies have determined receptor levels by biochemical methods. In a retrospective study, we employed specific monoclonal antibodies against estrogen and progesterone receptors in 10 benign paraffin-embedded hepatic lesions: five examples of hepatic adenoma and five examples of focal nodular hyperplasia. All patients were female, except for one male with adenoma and one male with focal nodular hyperplasia. No patient had received tamoxifen citrate or any other form of hormonal therapy for their hepatic lesion. Positive controls included benign and malignant breast tissue. No positive staining was seen in hepatic adenoma, focal nodular hyperplasia, or normal adjacent liver parenchyma. Intense positive staining was seen in all positive control tissues. This negative result with the use of specific monoclonal antibodies in an established immunohistochemical method for analysis of estrogen and progesterone receptors does not exclude the presence of these receptors in benign hepatic lesions, but does suggest that, if present, they occur in much smaller amounts than in benign and malignant breast tissue. The presence of hormone receptors in benign hepatic tumors deserves further study.
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