乳腺癌是女性主要的恶性肿瘤，近年来，其发病率不断上升。在西欧、北美等发达国家，女性乳腺癌的发病率居女性恶性肿瘤的首位，在我国居第二或第三位，预测到22年将居第一位［fi。而关于女性乳腺癌发病的危险因素，研究结果还有很多不明确或不一致的地方。武汉市女性乳腺癌的 Breast cancer is a major malignancy of women. In recent years, its incidence has been rising. In Western Europe, North America and other developed countries, the incidence of female breast cancer ranks first in women’s malignant tumors, ranking second or third in China, and is expected to be the first in 22 years. As for the risk factors for female breast cancer, the results of the study are still ambiguous or inconsistent. Wuhan Women’s Breast Cancer