Abstract
The second part of the article is devoted to the molecular characteristics of epithelial-myoepithelial carcinoma, polymorphous adenocarcinoma, myoepithelial carcinoma, basal cell adenocarcinoma, and salivary duct carcinoma. In addition, the new entities mucinous adenocarcinoma, sclerosing microcystic adenocarcinoma, and microsecretory adenocarcinoma are summarized. The molecular genotype can also be very helpful in diagnosing most of these entities. In this regard, overexpression of the androgen receptor and/or human epidermal growth factor receptor2 (HER2)/neu can support diagnosis in the appropriate histopathologic context and may serve as apotential target for therapy in salivary duct carcinoma.
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