High-Grade Endometrioid Carcinoma of the Endometrium With a GATA-3-Positive/PAX8-Negative Immunophenotype Metastatic to the Breast: A Potential Diagnostic Pitfall

High-Grade Endometrioid Carcinoma of the Endometrium With a GATA-3-Positive/PAX8-Negative Immunophenotype Metastatic to the Breast: A Potential Diagnostic Pitfall