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病理形态:大体:肿瘤显示囊腔,充有瘤组织,其周围可呈局部浸润、破坏骨组织;但有时界限清楚。镜下:组成于成片的多角形上皮细胞,具有结缔组织间质,上皮细胞在多数区域密集成片、而有些区域则呈筛状结构,包裹透明的间质。细胞界限清楚,胞浆均质而轻度嗜硷性,常有细胞间桥。核空泡状,有明显核仁。核的大小有明显差异,可见大达100微米直径的巨核;许多细胞有双核或多核,核分裂象罕见。至于均质性透明间质,许多作者证明属于淀粉样物质。Chaudhry 等(1972)认为这
Pathological morphology: General: The tumor shows a cyst cavity filled with tumor tissue, which may show local infiltration and destruction of bone tissue around; but sometimes the boundaries are clear. Microscopically: Constituted in a sheet of polygonal epithelial cells with connective tissue mesenchyme, epithelial cells densely integrated in most areas, and in some areas a sieve-like structure, enclosing a transparent interstitium. The cell boundaries are clear, the cytoplasm is homogeneous and mildly osminophilic, and there is often an intercellular bridge. Nuclear vacuoles, with obvious nucleoli. There are significant differences in the size of the nucleus, showing large meganuclears up to 100 microns in diameter; many cells have binuclear or multinuclear, and mitoses are rare. As for the homogenous and transparent stroma, many authors have proved to be amyloid. Chaudhry et al. (1972) thought this