Danazol for benign breast disease.

Three groups of women with benign breast disease were treated with danazol for 3 to 6 months. Doses of 100 mg per day were given to 40 patients, 200 mg to 55, and 400 mg to 35. The age range of the patients was 20 to 48 years. The patients were rechecked at 6-month intervals over a period of 48 months. Most of them were seen four or more times after completion of therapy. Elimination of nodularity occurred in about two thirds; three experienced no improvement, and partial resolution was obtained in the remainder. Untoward effects were minimal or trivial. Danazol proved to be an excellent hormonal agent in the management of fibrocystic disease of the breast.