Carcinosarcoma of the parotid gland: Report of a case with cytohistologic and immunohistochemical findings

From: Archives of Pathology & Laboratory Medicine | Date: August 1, 1998| Author: | Copyright information

* True malignant mixed tumors (carcinosarcomas) of salivary gland origin are exceedingly rare and demonstrate malignant epithelial and stromal components. We report a case of parotid gland carcinosarcoma that showed squamous cell carcinoma and malignant fibrous hystiocytoma without clinical or histologic evidence of a preexisting pleomorphic adenoma. This tumor consisted of 2 histologically different populations of cells without evidence of a common origin from the myoepithelial cell, which is the putative precursor cell of pleomorphic adenoma and its derived carcinosarcoma. In addition to ...

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