乳腺癌的发病率占女性恶性肿瘤的第一位。据美国最新调查结果显示2007年女性癌症死因中乳腺癌排在第二位,仅次于肺癌之后。随着检查技术的发展以及知识的普及,越来越多的乳腺癌被早期发现。既往乳腺癌的治疗手段主要是根治术,但是近些年来保乳治疗逐渐成为早期乳腺癌的标准治疗 The incidence of breast cancer accounted for the first female malignant tumor. According to the latest U.S. findings, breast cancer ranks second in 2007 among cancer deaths in women, after lung cancer. With the development of examination techniques and the popularization of knowledge, more and more breast cancers have been discovered early. The treatment of previous breast cancer is mainly radical surgery, but in recent years, breast-conserving treatment has gradually become the standard treatment of early breast cancer