Organ-Specific Clinicopathological Features That Are Associated With Post-Relapse Survival of Metastatic Breast Cancer in Japanese Women: A Multicenter Cohort Study

Based on a single-organ metastasis cohort, this study identified distinctive clinicopathological features and survival outcomes according to the site of initial distant recurrence. Brain metastases were associated with the poorest outcomes, highlighting the need for improved risk stratification and treatment strategies.