title: [Pathological study on epithelioid sarcoma].
abstract: 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.
authors.forename: D
authors.initials: D
authors.lastname: Chen
authors.forename: S
authors.initials: S
authors.lastname: Li
mesh_terms: 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