Stromeyer F W, Haggitt R C, Nelson J F, Hardman J M
Arch Pathol. 1975 May;99(5):242-5.
A gingival tumor that invaded the anterior maxilla was removed from a 14-year-old boy and studied by light and electron microscopy. The tumor was composed exclusively of myoepithelial cells and appeared to be malignant. By light microscopy, the tumor appeared to be a poorly differentiated epithelial neoplasm of undetermined origin; however, electron microscopical examination showed myoepithelial differentiation, indicative of a salivary gland origin. To our knowledge, the present case represents the only confirmed myoepithelioma that shows features indicative of malignant potential. Myoepitheliomas may be related to mixed tumors of salivary glands.
从一名14岁男孩身上切除了一个侵犯上颌前部的牙龈肿瘤，并通过光学显微镜和电子显微镜进行研究。该肿瘤仅由肌上皮细胞组成，似乎具有恶性特征。光学显微镜下，该肿瘤似乎是一种来源不明的低分化上皮性肿瘤；然而，电子显微镜检查显示有肌上皮分化，提示为涎腺来源。据我们所知，本病例是唯一确诊的显示有恶性潜能特征的肌上皮瘤。肌上皮瘤可能与涎腺混合瘤有关。
