Erschienen in:
01.03.2013 | Case Report
Lacrimal Gland Adenoid Cystic Carcinoma with High-Grade Transformation to Myoepithelial Carcinoma: Report of a Case and Review of Literature
verfasst von:
Prokopios P. Argyris, Stefan E. Pambuccian, Zuzan Cayci, Charanjeet Singh, Konstantinos I. Tosios, Ioannis G. Koutlas
Erschienen in:
Head and Neck Pathology
|
Ausgabe 1/2013
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Abstract
Adenoid cystic carcinoma (AdCC) is the most frequent malignant neoplasm of the lacrimal glands. Like its salivary gland counterpart, lacrimal AdCC can rarely undergo high-grade transformation (“dedifferentiation”). We herein report the clinical, radiographic and microscopic findings of a lacrimal gland AdCC with high grade transformation, occurring in a 39-year-old female patient. In contrast to salivary gland AdCC with high-grade transformation, which usually shows a high grade component with “ductal” differentiation, in the case presented, the “dedifferentiated” component showed morphologic and immunohistochemical features of myoepithelial differentiation.