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[Therapeutic use of a gonadotropin releasing hormone analogue in breast cancer].

Superagonistic analogues of Gn-RH given chronically produce a paradoxic inhibition of pituitary gonadotropin secretion and consequently decrease the peripheric hormones estradiol and progesterone to a postmenopausal level. For curative purposes buserelin (SuprefactR, Hoechst) treatment has been performed by the authors in two cases of breast cancer. The patients--one with NED (no evidence of disease) and the other with pulmonary and osseal metastases--in addition to low hormonal levels developed amenorrhoea. A group of climacteric complaints were observed without any toxic side effects, however. The treatment of premenopausal women suffering from breast cancer with chronic administration of Gn-RH analogues may constitute a valuable alternative to surgical oophorectomy.