Case Study of a Parotid Gland Adenocarcinoma Dedifferentiated from Epithelial-Myoepithelial Carcinoma
Figure 2
Myoepithelial cells with smooth muscle actin (SMA) positivity on immunohistochemistry ×200 (a). There are bilayered tumor cells in the basal layer, the outer myoepithelial cells have a clear appearance, and the inner epithelial cells have lumen formation with hematoxylin and eosin ×200 (b).
