PMID- 30522175 OWN - NLM STAT- MEDLINE DCOM- 20190226 LR - 20190226 IS - 0529-5807 (Print) IS - 0529-5807 (Linking) VI - 47 IP - 12 DP - 2018 Dec 8 TI - [Clinicopathologic and molecular features of myoepithelial tumors of salivary glands]. PG - 936-940 LID - 10.3760/cma.j.issn.0529-5807.2018.12.008 [doi] AB - Objective: To investigate the clinicopathological, and molecular characteristics of myoepithelial tumors (MTs) of salivary glands. Methods: A total of 37 MTs cases including 13 malignant epithelial tumors (MMTs) and 24 benign epithelial tumors (BMTs) of salivary glands were identified from the archives of the Department of Pathology, General Hospital of Eastern Theater Command, dating from 2006 to 2016. Clinical features, histological patterns, immunohistochemical characteristics and status of EWSR1 gene rearrangement by fluorescence in situ hybridization (FISH) analysis were reviewed in all cases. Results: Clinically, 37 MTs cases mainly occurred in the parotid glands, when most of the patients presented with painless masses. Of the 13 MMTs cases, male to female ratio was 7ratio6, and the median age was 62 years old. Of the 24 BMTs cases, male to female ratio was 5ratio7, and the median age was 54 years old. Immunohistochemically, 37 MTs cases were positive for CKpan, and at least one myoepithelial marker. Twenty six of 37 MTs cases were analyzable for the EWSR1 gene break by FISH. Based on the previous evaluation criterion, the EWSR1 translocation was detected in 4 cases of 11 MMTs, and 4 cases of 15 BMTs. According to the main histological composition of tumor cells, 4 EWSR1-positive MMTs covered 2 clear-cell cases and 2 epithelioid-cell cases, when 4 EWSR1-positive BMTs covered 2 clear-cell cases, 1 plasmacytoid-cell case, and 1 spindle-cell case. Conclusions: Males and females are affected equally. MTs express immunoreactivity for CKpan, and at least one myoepithelial marker. The EWSR1 rearrangement is present in a subset of MTs, with variable morphological characteristics, and has no statistical significance on clinical behavior. FAU - Ni, H AU - Ni H AD - Department of Pathology, General Hospital of Eastern Theater Command, Nanjing 210002, China. FAU - Wu, N AU - Wu N FAU - Wang, X T AU - Wang XT FAU - Xia, Q Y AU - Xia QY FAU - Wang, X AU - Wang X FAU - Shi, S S AU - Shi SS FAU - Li, R AU - Li R FAU - Zhou, X J AU - Zhou XJ FAU - Rao, Q AU - Rao Q LA - chi GR - 81372743/National Natural Science Foundation of China/ GR - 81101933/National Natural Science Youth Science Foundation/ GR - BK2010463/Jiangsu Natural Science Foundation/ PT - Journal Article PL - China TA - Zhonghua Bing Li Xue Za Zhi JT - Zhonghua bing li xue za zhi = Chinese journal of pathology JID - 0005331 RN - 0 (Biomarkers, Tumor) RN - 0 (EWSR1 protein, human) RN - 0 (RNA-Binding Protein EWS) RN - EC 2.7.3.2 (Creatine Kinase) SB - IM MH - Biomarkers, Tumor MH - Creatine Kinase/analysis MH - Female MH - Gene Rearrangement MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - *Myoepithelioma/chemistry/genetics/pathology MH - *Parotid Neoplasms/chemistry/genetics/pathology MH - RNA-Binding Protein EWS/genetics MH - Salivary Gland Neoplasms/chemistry/genetics/pathology OTO - NOTNLM OT - Immunohistochemistry OT - Myoepithelioma OT - Salivary gland neoplasms EDAT- 2018/12/14 06:00 MHDA- 2019/02/27 06:00 CRDT- 2018/12/08 06:00 PHST- 2018/12/08 06:00 [entrez] PHST- 2018/12/14 06:00 [pubmed] PHST- 2019/02/27 06:00 [medline] AID - 10.3760/cma.j.issn.0529-5807.2018.12.008 [doi] PST - ppublish SO - Zhonghua Bing Li Xue Za Zhi. 2018 Dec 8;47(12):936-940. doi: 10.3760/cma.j.issn.0529-5807.2018.12.008.