乳腺癌为妇女常见的恶性肿瘤之一 ,发病率在世界各地虽有明显差异 ,但都有上升趋势。在多数发达国家 ,乳腺癌的发病率居女性常见恶性肿瘤的前几位 ,近几年我国 (沿海开放地区为著 )发病率增长较快 ,内分泌治疗在乳腺癌的综合治疗中占有十分重要的地位 ,已引起社会各界的广泛关 Breast cancer is one of the most common malignant tumors in women. Although there are obvious differences in incidence all over the world, breast cancer has an upward trend. In most developed countries, the incidence of breast cancer is the most common malignant tumor in women. In recent years, the incidence of the disease in our country (coastal open areas) has increased rapidly. Endocrine therapy plays a very important role in the comprehensive treatment of breast cancer The status has caused widespread concern in all sectors of society