乳腺癌是威胁全球女性最常见的恶性肿瘤~([1])。通常将<40岁归为年轻乳腺癌病人~([2])。年轻病人的乳腺癌往往侵袭性强、恶性度高、分期晚、预后较差~([2-4]),故成为乳腺癌临床治疗的一大难点。根据世界卫生组织2012年的数据,美国年轻乳腺癌病人的比例为5.6%,我国高达15.2%。因此,年轻乳腺癌病人的治疗在我国具有更重要的临床意义和社会意义。对于早期乳腺癌,外科手术的局部治疗起到最为关键的作用。年轻乳腺癌病人的外科治疗相比于年老病人更具复杂性。鉴于肿瘤的侵袭性强,外科 Breast cancer is the most common malignancy in women worldwide (1). <40 years of age are usually classified as young breast cancer patients ~ ([2]). Breast cancer in young patients is often aggressive, malignant, late stage, poor prognosis ~ ([2-4]), it has become a major clinical treatment of breast cancer difficult. According to the 2012 WHO data, the proportion of young breast cancer patients in the United States is 5.6%, up to 15.2% in China. Therefore, the treatment of young breast cancer patients in our country has more important clinical significance and social significance. For early breast cancer, topical surgery plays the most critical role. Surgical treatment of young breast cancer patients is more complicated than the older patients. Given the aggressiveness of the tumor, surgery