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Int J Surg Case Rep. 2019 Jan 19;55:88-91. doi: 10.1016/j.ijscr.2019.01.004. [Epub ahead of print]

A case report of parotid mammary analogue secretory carcinoma and reviews.

Author information

1
Department of Surgery, New York Presbyterian Queens Medical Center/Weill Cornell Medical College, 56-45 Main Street, Flushing, New York, United States. Electronic address: lus9036@nyp.org.
2
Department of Surgery, New York Presbyterian Queens Medical Center/Weill Cornell Medical College, 56-45 Main Street, Flushing, New York, United States.
3
Department of Pathology, New York Presbyterian Queens Medical Center/Weill Cornell Medical College, 56-45 Main Street, Flushing, New York, United States.

Abstract

INTRODUCTION:

Mammary analog secretory carcinoma (MASC) is a new diagnosis of head and neck tumors first reported in 2010. It was often misdiagnosed as salivary acinic cell carcinoma (AciCC). We present a patient with an asymptomatic parotid tumor that underwent deep lobe parotidectomy and postoperative radiation therapy. The final pathology showed MASC.

CASE PRESENTATION:

A 57-year-old male presented with an asymptomatic enlarging right parotid mass. A CT neck with IV contrast showed a 1.2 cm heterogeneously enhancing mass in the center of the right parotid gland without extraparotid extension. An FNA showed an epithelial neoplasm with papillary features. The patient underwent a right deep lobe parotidectomy with facial nerve dissection. The final pathology confirmed the diagnosis of MASC. He subsequently completed a 6-week course of radiation therapy and remained asymptomatic at his 30-month follow up.

DISCUSSION/CONCLUSION:

Although MASC is considered a low-grade tumor in most cases, recurrence and disseminated disease are not uncommon. No standard treatment protocol has been established. This report aims to enhance the awareness of this diagnosis and provide a review of current treatments for head and neck oncology care providers.

KEYWORDS:

Cancer; Case report; Head-and-neck; Parotid; Salivary

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