ESR1 and metastatic malignant neoplasm in the lymph nodes: The multivariate Cox hazard analyses revealed that AR expression, as well as lymph node metastasis and nuclear grade, was independently associated with a good prognosis in the overall study population (high vs. low AR expression: HR, 0.46; 95% confidence interval, 0.26–0.79, P = 0.0052) and the ER-positive cohort of patients (high vs. low AR expression: HR, 0.34; 95% confidence interval, 0.18–0.64, P = 0.0009; Table 2).