An excretion of the follicle-stimulating hormone (FSH), estrogens, pregnandiol, 17-KS, vaginal cytology were studied in 22 patients with dyshormonal hyperplasias of mammary glands and in 12 healthy females with ovulatory cycles. The age of patients under study ranged from 20 to 49 years. The patients showed a higher level of excretion of FSH, estriol, pregnandiol and a lower level of 17-KS excretion than healthy persons.