However, because a small percentage of nipple discharges can indicate
breast/nipple cancer, any persistent
discharge from the nipple(s) should be evaluated by a physician.
Up to 20% of women may experience spontaneous milky, opalescent, or clear fluid nipple discharge. During breast self-exam, fluid may normally be expressed from the breasts of 50% to 60% of Caucasian (White) and African-American women and 40% of Asian-American women.