[Pathological study on epithelioid sarcoma].
Thirteen cases of epithelioid sarcoma were studied by light microscopy (LM), electron microscopy and immunohistochemical technique. LM revealed a nodular pattern of the tumor cells, which consisted of various degrees of a typical epithelioid cells and plump spindle-shaped cells. Irregular necrosis was seen in the centre of some nodules. Ultrastructurally the tumor cells exhibited abundant intermediate filaments, desmosome-like cell junctions and small intercellular spaces surrounded by microvilli. Immunohistochemically, there was positivity for vimentin and keratin. The author discussed diagnosis, differential diagnosis and histogenesis of epithelioid sarcoma.
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D000293:Adolescent; D000328:Adult; D001132:Arm; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007382:Intermediate Filaments / Q000648:ultrastructure; D008297:Male; D008875:Middle Aged; D012509:Sarcoma / Q000473:pathology* / Q000648:ultrastructure; D012983:Soft Tissue Neoplasms / Q000473:pathology* / Q000648:ultrastructure