The ratio of visceral metastases was the highest in HER2-positive followed by triple-negative and luminal metastasized disease, but this difference did not reach statistical significance (74.4 vs. 73.3 vs. 57.9 %; p > 0.05; χ 2 test). 17/571 (3 %) patients were diagnosed with BM during their respective course of disease.
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