title: Ameloblastic fibrosarcoma: an ultrastructural study of the mesenchymal component.
abstract: The mesenchymal components of tumors from 2 patients with ameloblastic fibrosarcoma were studied ultrastructurally. The mesenchymal components consisted predominantly of fibroblastic cells with a few histiocytic or fibrohistiocytic cells and myofibroblastic cells. In addition, a very small number of undifferentiated mesenchymal cells were found. We speculate that the mesenchymal components in this tumor may be derived from the undifferentiated mesenchymal cells.
mesh_terms: D000328:Adult; D003593:Cytoplasm / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000648:ultrastructure*; D008441:Maxillary Neoplasms / Q000648:ultrastructure*; D008648:Mesoderm / Q000166:cytology / Q000648:ultrastructure; D008854:Microscopy, Electron; D009808:Odontogenic Tumors / Q000648:ultrastructure*; D009940:Organoids / Q000648:ultrastructure