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据美国癌症协会(ACS)估计,美国2011年确诊的乳腺癌新发病例有229060例,死于乳腺癌的患者有39920例[1]。乳腺癌是美国妇女最常见的恶性肿瘤。在我国占全身各种恶性肿瘤的7%～10%,并呈逐年上升及年轻化趋势[2]。目前乳腺癌手术治疗失败的原因主要是局部复发和远处转移。乳腺癌术后的总复发率约为10%～40%,且多出现在初次治疗后的2年
According to the American Cancer Society (ACS), there are 229,060 new cases of breast cancer diagnosed in the United States in 2011, and 39,920 cases of breast cancer patients have died [1]. Breast cancer is the most common malignancy in American women. In China, it accounts for 7% to 10% of all types of malignant tumors in the body, and it has been increasing year by year and younger[2]. The current failure of breast cancer surgery is mainly due to local recurrence and distant metastasis. The total recurrence rate after breast cancer surgery is about 10% to 40%, and it usually appears 2 years after the initial treatment.