because women with gross cystic disease of the breast are at four times greater risk of developing malignant breast disease , it is felt that the administration of courses of danazol , an impeded androgen derived from the progestin , 17 alpha-ethinyl testosterone , has proved effective in lessening fibrocystic disease of the breast , frequently obviating the need for breast biopsy .
C0006145
of
C0016034
fibrocystic disease of the breast