Objective To analyze the risk factors for brain metastasis from advanced breast cancer and provide clinical guide to screen high risk patients for brain metastasis. Methods T test and Chi-square Test were used for univariate analysis to find out the risk factors for brain metastasis, and these factors were analyzed by multivariable logistic regression analysis. Results Univariate analysis showed that 9 risk factors, such as tumor diameter, number of involved positive lymph nodes, molecular typing, HER2, adj...