Korean J Audiol.
2012 Dec;16(3):148-151. 10.7874/kja.2012.16.3.148.
Epithelial-Myoepithelial Carcinoma of External Auditory Canal Evolving from Pleomorphic Adenoma
- Affiliations
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- 1Department of Otolaryngology-Head & Neck Surgery, Dankook University College of Medicine, Cheonan, Korea. drmung@naver.com
- 2Department of Pathology, Dankook University College of Medicine, Cheonan, Korea.
- KMID: 1430738
- DOI: http://doi.org/10.7874/kja.2012.16.3.148
Abstract
- A 45-year-old female patient visited the clinic due to ear fullness. A 8 mm sized mass was found in the external auditory canal. It was surgically removed and the pathology exam confirmed epithelial-myoepithelial carcinoma (EMC). EMC is glandular epithelial neoplasm of the salivary gland. EMC originating from the external auditory canal is very rare, and only 1 case has been reported so far in the literature. The difference between our case and the one previously published was that the tumor was previously proven as a benign tumor (i.e. pleomorphic adenoma) 5 years ago. Therefore, this is the first case in the literature showing the evolvement of pleomorphic adenoma of the external auditory canal into EMC.
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