年龄增加是乳腺癌发生的最重要的独立危险因素,乳腺癌是女性最常见的恶性肿瘤之一,在美国等西方国家及我国部分发达地区,乳腺癌发病率已高举恶性肿瘤的首位,是女性癌死亡的主要原因[1]。随着人口老龄化及女性平均寿命的延长,老年人乳腺癌的发病率在增加。 Increasing age is the most important independent risk factor for breast cancer. Breast cancer is one of the most common malignant tumors in women. In the United States and other western countries and some developed areas in China, the incidence of breast cancer has been the highest in malignant tumors, The main reason for cancer death [1]. As the population ages and the average life expectancy of women increases, the incidence of breast cancer in the elderly is on the rise.