title: [Extracranial meningioma--a report of 6 cases].
abstract: Six cases of extracranial meningioma (EM) are reported. In addition to the routine paraffin section and HE stain as examined by light microscope, immuno-histochemical studies with antibodies against vimentin, EMA, CK1, and S-100 were done. One specimen was examined by electron microscopy as well. For subdivision, 4 belonged to meningotheliomatous type and each of the rest belonged to transitional and psammomatous types respectively. According to Lopez's classification, 5 were Type II and 1 was Type III. The significance of Lopez's classification of this tumor in clinical diagnosis and differential diagnosis, in histogenesis and pathogenesis are discussed.
authors.affiliation: Cancer Institute, Chinese Academy of Medical Sciences, Beijing.
authors.forename: J X
authors.initials: JX
authors.lastname: Li
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D008579:Meningioma / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000175:diagnosis / Q000473:pathology; D010610:Pharyngeal Neoplasms / Q000175:diagnosis / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology