title: [Ultrastructure of malignant fibrosarcoma].
abstract: Electron microscopic examinations of two malignant fibroxanthomas revealed some ultrastructural features characteristic of this tumor. The tumor elements were represented by histiocyte-like, fibroblast-like and little differentiated cells. In some of the latter the signs of macrophage differentiation could be seen and therefore a possibility of their transformation into histiocytes is assumed.
mesh_terms: D002454:Cell Differentiation; D005260:Female; D005347:Fibroblasts / Q000473:pathology; D005354:Fibrosarcoma / Q000473:pathology / Q000648:ultrastructure*; D006615:Hip; D006644:Histiocytes / Q000473:pathology; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D009132:Muscles / Q000473:pathology / Q000648:ultrastructure; D012983:Soft Tissue Neoplasms / Q000473:pathology / Q000648:ultrastructure*
vernacular_title: Ul'trastruktura zlokachestvennoĭ fibrosarkomy.