Silverman J F, Kay S, Chang C H
Cancer. 1978 Jul;42(1):189-93. doi: 10.1002/1097-0142(197807)42:1<189::aid-cncr2820420131>3.0.co;2-p.
The electron microscope features of three primary cardiac rhabdomyomas and one skeletal muscle rhabdomyoma arising from the floor of the mouth are compared, along with a review of the previously reported ultrastructural features of skeletal rhabdomyomas. Cardiac rhabdomyoma filaments appear more orderly and have features suggestive of origin from both Purkinje and myocardial fibers. Zebra bodies were seen exclusively in the cardiac rhabdomyomas. In comparison, the extracardiac rhabdomyoma filaments were more disorderly and many cases had hypertrophic Z bands corresponding to the jackstraw or matchstick structures seen with the light microscope. This finding, along with the presence of satellite cells, was not seen in the cardiac rhabdomyomas.
比较了3例原发性心脏横纹肌瘤和1例起源于口腔底部的骨骼肌横纹肌瘤的电子显微镜特征，并回顾了先前报道的骨骼肌横纹肌瘤的超微结构特征。心脏横纹肌瘤的细丝显得更有序，具有提示起源于浦肯野纤维和心肌纤维的特征。仅在心脏横纹肌瘤中可见斑马小体。相比之下，心脏外横纹肌瘤的细丝更无序，许多病例有肥大的Z带，对应于光镜下所见的稻草或火柴棍样结构。这一发现以及卫星细胞的存在在心脏横纹肌瘤中未见。
