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报告1例左颊部黏液表皮样癌。患者女,80岁。左颊部肿块半年。体格检查:左颊部见一约3.0 mm×2.5 mm黑褐色圆形实性肿块,呈分叶状。组织病理示真皮内见肿瘤细胞团块,瘤细胞较大,有异形性,瘤巢周围散在淋巴细胞浸润。免疫组化示肿瘤细胞细胞角蛋白(CK)、P63阳性,上皮膜抗原(EMA)少量细胞阳性,癌胚抗原(CEA)、肌动蛋白(actin)阴性,Ki-67<10%(+),AB-PAS染色肿瘤局部可见少量黏液,结合组织病理和免疫组化诊断为黏液表皮样癌。
Report 1 case of left cheek mucoepidermoid carcinoma. Female patient, 80 years old. Left cheek mass six months. Physical examination: left cheek see a about 3.0 mm × 2.5 mm dark brown round solid mass, lobulated. Histopathology showed intradermal see tumor cells clumps, tumor cells larger, with the shape of tumor nests scattered lymphocyte infiltration. Immunohistochemistry revealed a small number of cytokeratin (CK), P63 positive, epithelial membrane antigen (EMA) positive cells, carcinoembryonic antigen (CEA), actin negative, Ki- 67 <10% AB-PAS staining showed a small amount of mucus in the tumor, which was diagnosed as mucoepidermoid carcinoma by histopathology and immunohistochemistry.