FSH and LH responses to LH--RH stimulation during intravenous estrogen administration in women with polycystic ovary syndrome before and after ovarian wedge resection.

FSH and LH responses to LH--RH stimulation were investigated at 0,3rd and 6th hrs in a six hours exogenous intravenous administration of 300 mg conjugated estrogens before ovarian cuneiformic resection and on the 10th day thereafter in seven patients with polycystic ovarian syndrome. Before operation exogenous pituitary LH--RH stimulation following estrogen administration increased the serum FSH concentrations and response, and decreased LH concentrations and response, while after operation a slight increase of FSH response with a concomitant excessive LH response was observed. A dual action of estrogens in modifying the pituitary gonadotrophins, as well as hypothalamic LH--RH release was supposed.