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PubMed | Kumamoto University, Suez Canal University and Kumamoto Shinto General Hospital Kumamoto
Type: Case Reports | Journal: International journal of clinical and experimental pathology | Year: 2014

Myoepithelial carcinoma is a well-known tumor of salivary gland, representing 1% of all salivary gland tumors. They have also been reported in other sites as skin/soft tissue, breast and lung. This paper reports a rare case of primary myoepithelial carcinoma in the liver, as well as discusses the findings of immunohistochemistry. The clinical manifestations, imaging characteristics, and histopathological changes of myoepithelial carcinoma in this case were described. The patient was a 33 years old female presented with a cystic tumor in the right lobe of the liver. As the liver tumor increased in size within six months, malignant neoplasm was suspected and thus anterior hepatic segmentectomy was performed. The mass composed of glandular-like structures and trabecular sheets of spindled shaped cells and epithelioid cells which were positive for myoepithelial markers. The tumor recurred within one year, in the left lobe of the liver and partial left lobe lobectomy was performed. The tumor resected showed similar histology to the primary tumor. Three months later, another recurrence was noted for which radiofrequency ablation was performed. This report presents a recurrent case of myoepithelial carcinoma in the liver and suggests the possibility of biliary origin of such tumor.

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