Böck D, Böck P
Department of Micromorphology and Electron Microscopy, University of Vienna, Austria.
Histol Histopathol. 1987 Jul;2(3):285-9.
An adult rhabdomyoma was light and electron microscopically studied. The lesional cells presented well-known structural details, such as abundance of mitochondria and glycogen, myofilaments and myofibrils, hypertrophied Z-bands and masses of Z-band material. Triads were randomly scattered in the cytoplasm and also related to the individual sarcomeres. In sarcomeres the triads were regularly placed near to the A-I-junctions. This peculiarity of mammalian skeletal muscle fibers may yield a criterion to distinguish between cardiac and extracardiac rhabdomyomas. Circumscribed surface areas of the tumor cells were provided with elaborate infoldings of plasma membrane and basal lamina. These areas were interpreted as imitating myotendinous junctions. Satellite cells were regularly found.
对一例成人横纹肌瘤进行了光镜和电镜研究。病变细胞呈现出一些众所周知的结构细节，如丰富的线粒体和糖原、肌丝和肌原纤维、肥大的Z线和Z线物质团块。三联体随机散布在细胞质中，也与各个肌节相关。在肌节中，三联体规则地位于A-I连接点附近。哺乳动物骨骼肌纤维的这一特性可能为区分心脏和心脏外横纹肌瘤提供一个标准。肿瘤细胞的局限性表面积有精心折叠的质膜和基膜。这些区域被解释为模仿肌腱连接。经常发现卫星细胞。
