Synchronous Parotid (Mammary Analog) Secretory Carcinoma and Acinic Cell Carcinoma: Report of a Case

C. Mossinelli, C. Pigni, F. Sovardi, A. Occhini, L. Preda, M. Benazzo, P. Morbini, F. Pagella

Research output: Contribution to journalArticlepeer-review


Mammary analogue secretory carcinoma (MASC) is a recently described low-grade salivary gland malignancy with histologic, immunohistochemical and molecular similarities to secretory carcinoma of the breast, including a specific t(12;15)(p13;q25) resulting in an ETV6–NTRK3 gene fusion. Ultrasound and magnetic resonance imaging frequently document a macrocystic structure. The main differential diagnosis of secretory carcinoma is with low grade acinic cell carcinoma (AciCC). The two can be differentiated with immunohistochemical stains for S100, mammaglobin, carbonic anhydrase VI and DOG-1; the identification of the specific translocation can help to characterize non-typical cases. We report a unique case of synchronous MASC and AciCC presenting in a parotid gland and discuss the implications of the correct identification of the two tumors.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalHead and Neck Pathology
Publication statusAccepted/In press - Jun 6 2018


  • Acinic cell carcinoma
  • Cystic carcinoma
  • MASC
  • Parotid
  • Salivary gland tumor

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Otorhinolaryngology
  • Oncology


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