BACKGROUND Mammary analogue secretory carcinoma (MASC) is a recently described pathologic entity. We report the case of a patient with an initial diagnosis of salivary acinic cell carcinoma later reclassified as MASC after next-generation sequencing revealed an ETV6-NTRK3 fusion. PATIENTS AND METHODS This alteration was targeted with the pan-Trk inhibitor entrectinib (Ignyta), which possesses...

The concept of dedifferentiation had previously been used in salivary gland carcinomas. Recently, the term "high-grade transformation" was introduced for adenoid cystic carcinoma, acinic cell carcinoma, epithelial-myoepithelial carcinoma, and polymorphous low-grade adenocarcinoma and may better reflect this phenomenon, although transformation into moderately differentiated adenocarcinoma (i.e.,...

Vol. 28, No. 2, 2016 255 Received October 27, 2014, Revised March 23, 2015, Accepted for publication April 29, 2015 Corresponding author: Mi Woo Lee, Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea. Tel: 82-2-3010-3460, Fax: 82-2-486-7831, E-mail: [email protected] This is an Open Access article distr...