title: [Ewing sarcoma located in the mandible: A case report].
abstract: Ewing sarcoma is the second most common primary malignant bone cancer in children and adolescents. Clinical presentation is usually dominated by local pain and a palpable mass. These symptoms justify imaging investigations: the first one, when an osseous lesion is suspected, is usually a conventional radiograph in two planes. Ewing sarcoma appears as a poorly defined osteolytic lesion that may frequently be associated with cortical erosion or laminar periosteal response ("onion skin"). However, this aspect is not pathognomonic and the definitive diagnosis is made by biopsy. Absence of pain or an unusual localization can lead to misdiagnosis. We report the case of a 7-year-old boy with Ewing sarcoma located in the mandible with a clinical picture including progressive mandibular swelling but no pain.
authors.affiliation: Département d'odontologie pédiatrique, CHU de Nancy, 2, rue du Docteur-Heydenreich, 54000 Nancy, France. Electronic address: magali.hernandez@univ-lorraine.fr.
authors.forename: M
authors.initials: M
authors.lastname: Hernandez
authors.affiliation: Département d'odontologie pédiatrique, CHU de Nancy, 2, rue du Docteur-Heydenreich, 54000 Nancy, France.
authors.forename: D
authors.initials: D
authors.lastname: Droz
authors.affiliation: Département d'hémato-oncologie pédiatrique, hôpital Brabois-Enfants, CHU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France.
authors.forename: L
authors.initials: L
authors.lastname: Mansuy
authors.affiliation: Département de chirurgie maxillo-faciale, hôpital central, CHU de Nancy, 29, avenue du Maréchal-de-Lattre-de-Tassigny, 54000 Nancy, France.
authors.forename: E
authors.initials: E
authors.lastname: Simon
authors.affiliation: Département d'hémato-oncologie pédiatrique, hôpital Brabois-Enfants, CHU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France.
authors.forename: P
authors.initials: P
authors.lastname: Chastagner
mesh_terms: D002648:Child; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000175:diagnosis / Q000601:surgery; D012512:Sarcoma, Ewing / Q000175:diagnosis / Q000601:surgery