PMID- 20032423 OWN - NLM STAT- MEDLINE DCOM- 20100126 LR - 20091224 IS - 1791-7530 (Electronic) IS - 0250-7005 (Linking) VI - 29 IP - 11 DP - 2009 Nov TI - Epithelial-myoepithelial carcinoma of the minor salivary glands: immunohistochemical and morphological features. PG - 4703-9 AB - AIMS: Epithelial-myoepithelial carcinoma (EMC) is a rare malignant salivary gland neoplasm that most commonly occurs in the parotid gland, but can also arise in the minor salivary glands. Three cases are reported of epithelial-myoepithelial carcinoma of the minor salivary glands, with the goal of better defining this entity. PATIENTS AND METHODS: All three cases showed a characteristic nodular/multinodular growth pattern and classic biphasic tubular histology. All parts of each tumor were surrounded by a myoepithelial cell rim and there was evidence of invasion. RESULTS: Immunohistochemical analysis showed the tumor cells to be weakly positive for S100, cytokeratin (CK) CK5/6, CK7, CKAE-1/AE-3 and strongly positive for epithelial membrane antigen (EMA) and p63; they were focally positive for calponin and acute lymphoblastic leukemia antigen (CD10). The tumor cells were negative for vimentin, alpha-smooth muscle actin (SMA) (except one case), glial fibrillar acid protein (GFAP) and MIB1. The tumors were resected completely with wide margins and no recurrence or metastasis had occurred from 6 to 15 months after surgery. CONCLUSION: Three cases of minor salivary gland tumors are described and the differential diagnosis underlined in relation to benign myoepithelioma. The characteristic morphological and immunohistochemical features aided diagnosis of these biphasic tumors. FAU - Angiero, Francesca AU - Angiero F AD - Anatomia Patologica, Ospedale San Gerardo Via Pergolesi 33, Monza, Italy. f.angiero@teos.it FAU - Sozzi, Davide AU - Sozzi D FAU - Seramondi, Rossella AU - Seramondi R FAU - Valente, Maria Gabriella AU - Valente MG LA - eng PT - Case Reports PT - Journal Article PL - Greece TA - Anticancer Res JT - Anticancer research JID - 8102988 RN - 68238-35-7 (Keratins) SB - IM MH - Aged MH - Aged, 80 and over MH - Epithelial Cells/pathology MH - Female MH - Humans MH - Immunohistochemistry MH - Immunophenotyping MH - Keratins/biosynthesis MH - Male MH - Middle Aged MH - Myoepithelioma/metabolism/*pathology MH - Salivary Gland Neoplasms/metabolism/*pathology EDAT- 2009/12/25 06:00 MHDA- 2010/01/27 06:00 CRDT- 2009/12/25 06:00 PHST- 2009/12/25 06:00 [entrez] PHST- 2009/12/25 06:00 [pubmed] PHST- 2010/01/27 06:00 [medline] AID - 29/11/4703 [pii] PST - ppublish SO - Anticancer Res. 2009 Nov;29(11):4703-9.