HER2-Positive Metaplastic Spindle Cell Carcinoma Associated with Synchronous Bilateral Apocrine Carcinoma of the Breast
Figure 3
Histological features of apocrine and metaplastic carcinomas in the right breast. (a) HE. Apocrine carcinoma including intraductal components. (b) Intraepithelial invasion in nipple erosion had a Pagetoid appearance. (c) The apocrine carcinoma was admixed with the sarcomatoid spindle cell lesion. (d) The spindle cell lesion showed high nuclear polymorphism and atypia. Atypical mitotic figures are seen.
