Figure 4From: Invasive salivary duct carcinoma ex pleomorphic adenoma of the parotid gland: a teaching case giving rise to the genuine diagnostic difficulty on an inadequate cytology specimenImmunohistochemical examination of the invasive SDC ex PA. (A, B, C). The carcinoma cells were strongly positive for AR (A), GCDFP-15 (B), and HER2 (C) in not only the ID (lt.) but ED (rt.) components. Conversely, the myoepithelial cells of the PA and ID components were negative for AR (A).Back to article page