The authors have investigated the presence of oestrogenic and progesteronic receptors in 38 patients with breast cancer. It was noted that these receptors were present in 20 patients, and that the hormone-dependent tumours are more frequent in patients which are in the post-menopausal stage. The level of circulating oestrogens was also investigated, as well as the amount of oestrogens in the cytosol of tumor cells, and in the normal cells from the diseased breast. In patients with oestrogen-positive tumors, and/or progesteron-positive tumors, a rise was noted in the amount of circulating oestradiol, an increased contents of cytosolic oestradiol, especially in the tumoral cells as compared with the normal ones in the same breast. On the basis of these data patients were selected, with hormone-dependent breast tumors in view of ovarectomy. The indications are discussed, as well as the advantages of surgical ovarectomy.
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