The high levels of serum FCH,TG and apoA1,maladjustment of menstruation,usage of estrin,well history of mammary gland disease and history of mammary gland trauma may be the risk factors for occurrence of breast cancer.

• 血清FCH、TG、apoA1水平高,月经不规律,使用雌激素,乳腺良性病史,乳腺外伤史可能为乳腺癌发生的危险因素。