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[Epithelial-myoepithelial carcinoma arising in the nasal cavity: a case report and literature review].

OBJECTIVE
To seek pathological features, diagnosis, treatment, prognosis of Epithelial-myoepithelial carcinoma arising in the nasal cavity.


METHOD
One case of Epithelial-myoepithelial carcinoma arising in the nasal cavity was analyzed retrospectively and studied with immunohistochemical Staining and light microscopy, as well as review of the literature.


RESULT
The clinical feature of epithelial-myoepithelial carcinoma in the nasal cavity was atypical and diagnosis relied on pathologic features. Epithelial-myoepithelial carcinoma consisted of myoepithelial and epithelial cells. Immunohistochemical staining demonstrated that cytokeratin P, cytokeratin L, S-100 protein, a-smooth muscle actin expressed positively.


CONCLUSION
Epithelial-myoepithelial carcinoma in the nasal cavity is a rare neoplasm. Wide surgical excision with a clear margin is the main therapy,and these tumors have the potential for metastasis and recurrence.