人体组织从正常状态演变为癌的先期变化precancerous lesion

• 肿瘤的发生大致要经过癌前病变10-30年时间。

  Tumours develop around 10–30 years after the appearance of precancerous lesions.

• 调整生活方式，治愈乳腺增生，是阻断乳腺癌的癌前病变的最佳措施。

  Improving one's lifestyle and treating mammary gland growths are the best measures by which to prevent the precancerous lesions of breast cancer.