Stahlberger R, Friede R L
Acta Neuropathol. 1977 Jan 31;37(1):43-8. doi: 10.1007/BF00684539.
Electronmicroscopic studies in a case of myomedulloblastoma support the concept that the medulloblastoma and the myoblastoma component of the tumor derive drom different cell lines. The myoblastoma component shows bundles of myogenic elements, whereby quite undifferentiated cells lacking myofilaments are tightly attached to differentiated elements having well organized myofilaments. These bundles are encompassed by a common basement membrane, and their cells are joined by junctions, helping the identification of the undifferentiated elements. No comparable structures were seen in the medulloblastoma component. The fine structure of the myoblastoma is reminiscent of aspects of normal fetal development of skeletal muscle.
对一例肌母细胞瘤性髓母细胞瘤的电子显微镜研究支持了这样一种观点，即肿瘤的髓母细胞瘤成分和成肌细胞瘤成分源自不同的细胞系。成肌细胞瘤成分显示有成肌元件束，其中相当未分化的缺乏肌丝的细胞紧密附着于具有组织良好的肌丝的分化元件上。这些束被共同的基底膜所包围，并且它们的细胞通过连接结构相连，这有助于识别未分化元件。在髓母细胞瘤成分中未见到类似结构。成肌细胞瘤的精细结构让人联想到骨骼肌正常胎儿发育的各个方面。
