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《Journal of Third Military Medical University》 2011-12
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Clinicopathologic and immunohistochemical characteristics of odontogenic adenoid tumor

Wang Peng1,2,Meng Gang1,Shi Yu1,Yu Dongmei1,Liu Fengxuan1,Yan Xiaochu1(1Institute of Pathology,Southwest Hospital,Third Military Medical University,Chongqing,400038;2Department of Pathology,No.264 Hospital of PLA,Taiyuan,Shanxi Province,030001,China)  
Objective To study the clinical manifestations,pathologic features,and differential diagnosis of odontogenic adenoid tumor(OAT).Methods Eight OAT patients admitted to Department of Stoma-tology in our hospital from January 2000 to June 2010 were enrolled in this study.Their clinical,imaging,and immunohistochemical data were analyzed and its related literature was reviewed.Results Of the 8 OAT patients(3 males and 5 females) at the age of 14-27 years(mean 20 years),3 were diagnosed with OAT in upper maxilla and 5 with OAT in lower maxilla.Their main clinical manifestations were local painless swelling and facial asymmetric malformation.The radiographic features included monolocular radiolucent shadow,opaque calcified particles,and tooth-like mass with an increased density.The main pathological lesion was OAT with a diameter of 4.0 cm and an intact capsule,characterized by cystic lesion,grit-like nodules on the cystic wall,tremelloid liquid,and non-growth out teeth in the cyst.The tumor was mainly composed of epithelial cells and a small amount of interstitial tissue.Solid parenchyma cell nest,tubular structure,ethmoid or cribriform structure,homogeneous substances and feosin-addicted calcified foci in different sizes and irregular shapes were formed in proliferated tumor cells.Immunohistochemical staining was positive for CK,vimentin and PAS.Conclusion OAT is a special kind of odontogenic benign tumors occurring mainly in upper maxilla and can be misdiagnosed as adamantinoma or dentigerous cyst.Its diagnosis can be established by biopsy before operation and freezing during operation,which benefits the selection of its surgical procedure.
【Key Words】: odontogenic tumor clinical pathology immunohistochemistry differential diagnosis
【CateGory Index】: R739.82
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【Citations】
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1 YUAN Hong1,WEI Haiming2,LIANG Jianping1,LU Jinlong1,WANG Tao1 (1 Department of Otolaryngology,2 Department of Pathology,People's Hospital of Guangxi Zhuang Autonomous Region,Nanning,Guangxi,530021,China);Expression and correlation of COX-2 and VEGF-C in nasopharyngeal carcinoma[J];Chinese Archives of Otolaryngology-Head and Neck Surgery;2008-01
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