Breast Cancer‐Specific Mortality in Small‐Sized Tumor with Stage IV Breast Cancer: A Population‐Based Study

Background Small‐sized primary tumor does not always indicate a better prognosis. We hypothesized that very small primary breast tumors with extensive lymph node (LN) metastases represented an aggressive biologic behavior in stage IV disease. Materials and Methods Data between 2010 and 2015 were ret...

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