title: [Extraskeletal Ewing's sarcoma. Anatomo-clinical study of a new case].
abstract: A case of extraskeletal Ewing's sarcoma arising in right lumbar region with involvement of epidural space is described in a 16 years old girl. The diagnosis of Ewing's sarcoma was done from cytochemical and electron microscopic studies which showed intra-cellular glycogen granules whereas cytologic and immunological analysis eliminated lymphoid malignancies. This case emphasized the interest of these techniques, adjunctive to routine light microscopic examination for the pursuit of a specific diagnosis in the small round cell neoplasm.
mesh_terms: D000293:Adolescent; D004824:Epidural Space; D005260:Female; D006801:Humans; D012512:Sarcoma, Ewing / Q000473:pathology*; D012983:Soft Tissue Neoplasms / Q000473:pathology*
vernacular_title: Sarcome d'Ewing extrasquelettique. Etude anatomo-clinique d'une nouvelle observation.