Abstract
INTRODUCTION AND IMPORTANCE
Breast mucoepidermoid carcinoma (MEC) is a very rare entity and usually underdiagnosed by the pathologists.
CASE PRESENTATION
54-year-old woman with a single palpable mass on the left breast with no nipple discharge. She underwent tumoretomy. Microscopic examination revealed a well circumstanced intracystic proliferation consisted of mucoid, epidermoid and intermediate cells. The tumor cells were positive for ER, PR but negative for HER2.
CLINICAL DISCUSSION
Salivary glands like neoplasms are described in the breast, and only represent 0.2 % to 0.3 % of breast carcinomas. They usually fall under the triple negative breast carcinomas. However some cases were described in the literature with a luminal A profile. The grading score used in the salivary glands based on the presence or lack thereof nuclear anaplasia, necrosis, high mitotic activity and perineural or lymphovascular invasion seems more appropriate in this rare entity.
CONCLUSIONS
It is crucial for pathologists to think of this type of Breast carcinomas, especially when there is mucoid, epidermoid and intermediate cells and it does not have to fall under triple negative breast carcinomas.