Fig. 7: Metastatic high-grade ovarian serous carcinoma to the breast.
From: Novel uses of immunohistochemistry in breast pathology: interpretation and pitfalls
High-grade serous carcinoma with micropapillary architecture (A) mimics breast micropapillary carcinoma, both of which can be ER+ positive (not shown). However, high-grade serous carcinoma is negative for mammaglobin (B) but shows strong and diffuse nuclear labeling for Pax8 (C) and WT-1 (D).
