Fig. 3.
Histopathology left temporal brain tumor. (xA) Comedonecrosis of the ductal carcinoma (circled) (x40*). (xB) Meningothelial cells (arrowhead), IDC cells bottom left (arrow) (x100*). (xC) Meningothelial cells, with few ductal carcinoma cells in between (circled) (x100*). (yD) Strong HER2 membrane staining (3+) in IDC; negative in meningothelial cells (x100*). (yE) GATA3 nuclear positivity (brown nuclear staining) in IDC component (x100*). (yF) PR positivity in meningothelial cells, (brown nuclear staining), whorling pattern. Surrounding IDC negative (x100*). x-H&E Staining, y-Immunohistochemistry, * -magnification; IDC, intraductal carcinoma.