Excretion of ketosteroids and proneness to breast cancer.

Abstract
The excretion of 7 individual ketosteroids was measured in 24-hr, urine specimens from 8 pre-menopausal women who had undergone mastectomy because of cancer. Ten noncancerous women served as controls. Distinctive patterns of ketosteroid excretion were definitely associated with breast cancer, and proneness to this disease can probably be detected in individuals before the disease attacks.