Nesland J M, Olafsson J, Sobrinho-Simöes M
J Oral Pathol. 1981 Feb;10(1):14-21.
We present the second case of plasmacytoid myoepithelioma of the palate, which was studied by light and electron microscopy. Apart from plasmacytoid cells, some spindle-shaped cells were observed. Both types of neoplastic cells had myoepithelial features, showing abundant 50-80 A thick filaments in the cytoplasm, and exhibited desmosomal junctions. A light cells with less abundant filaments and better equipped with other organelles were observed. Our findings show that there is no clear-cut distinction between the so-called plasmacytoid myoepithelioma and the spindle and stellate myoepithelioma. We suggest that the ultrastructural appearance of these tumors together with the usual histological criteria for malignancy for may be used to evaluate their prognosis.
我们报告第二例腭部浆细胞样肌上皮瘤，该病例经光镜和电镜研究。除浆细胞样细胞外，还观察到一些梭形细胞。两种肿瘤细胞均具有肌上皮特征，细胞质内可见大量直径50 - 80埃的细丝，并可见桥粒连接。观察到一种细丝较少、其他细胞器更丰富的亮细胞。我们的研究结果表明，所谓的浆细胞样肌上皮瘤与梭形及星状肌上皮瘤之间没有明确的区分。我们建议，这些肿瘤的超微结构表现以及通常的恶性组织学标准可用于评估其预后。
