乳腺小叶增生占女性乳房疾病的三分之二以上，从青年到中年均可发生。发病初期有乳房痛，以后出现肿块，或有乳头淡黄溢液，使病人很紧张。另据统计约有１％～３％的本病患者可能会转变为乳腺癌。增生的原因除与初产年龄超过３０岁、从未生育、高龄未婚、产后不哺乳，流产次数 Breast lobular hyperplasia accounts for more than two thirds of female breast disease, can occur from young to middle age. Early onset of breast pain, later appeared lumps, or nipple light yellow discharge, so that patients are nervous. According to statistics, about 1% to 3% of patients with this disease may be transformed into breast cancer. Reasons for hyperplasia and primiparous age over 30 years of age, never childbearing, old age unmarried, postpartum non-breastfeeding, the number of abortions