RESUMO
The urinary excretion of 14 neutral steroids was measured by gas-liquid chromatography in women with early and advanced breast cancer, in women with early uterine cancer, and in healthy women from urban and rural districts. The premenopausal patients with early breast cancer excreted subnormal amounts of five steroids (11-hydroxyandrosterone, 11-hydroxyetiocholanolone, pregnanediol, pregnanetriol, and tetrahydrocorticosterone) and increased amounts of tetrahydrocortisol as compared with the normal subjects of corresponding ages. From our findings, a new parameter was proposed by which a premenopausal breast-cancer patient was separated from the control. Postmenopausal breast-cancer patients excreted greater amounts of five steroids (one steroid from 17-ketosteroids and four from 17-hydroxycorticoids) than the corresponding controls. The discrepancy between premenopausal and postmenopausal breast cancer was tentatively related to ovarian-adrenal dysfunction in the course of aging. Oophorectomy induced a long-lasting tumor regression only in patients with a high value for the ratio of 11-deoxy-17-ketosteroid to 17-hydroxycorticosteroid in urine taken before surgery; the ratio in the responsive patients decreased remarkably after surgery. A constitutional change in 17-ketosteroids, as observed in a postmenopausal breast-cancer patient and a premenopausal healthy woman of urban origin, favored the geographic importance in the genesis of breast malignancy. The steroid abnormalities in uterine cancer were distinguishable from those of breast cancer in both premenopausal and postmenopausal women.