title: [Primary Ewing's sarcoma of the cranial vault. Report of 2 cases].
abstract: Primary Ewing sarcoma of the calvarial skull is very rare, found in less than 1% of the cases. Frontal and parietal convexities are the common sites of occurrence. We report two cases of primary Ewing sarcoma of the skull (in 13- and 14-year-old boys. The first tumor involved the right temporal region and exhibited unclear osteolytic appearance on skull x-rays while computed tomography showed an extraaxial enhanced mass and bone sclerosis with spiculated periosteal reaction. In the second case, the tumor was temporoparietal. Plain films demonstrated a large osteolysis and computed tomography revealed extensive bone destruction involving both the inner and outer tables. In both cases, the C scan revealed extraaxial enhanced masses with intracranial and extracranial extension. Radial resection was performed. Adjuvant chemotherapy was given and no recurrence or metastasis has occurred two years later.
authors.affiliation: Service de Neuroradiologie, Hôpital des Spécialités ONO, Rabat, Maroc.
authors.forename: H
authors.initials: H
authors.lastname: Boumdin
authors.forename: A
authors.initials: A
authors.lastname: el Quessar
authors.forename: N
authors.initials: N
authors.lastname: Chakir
authors.forename: M R
authors.initials: MR
authors.lastname: el Hassani
authors.forename: M
authors.initials: M
authors.lastname: Jiddane
mesh_terms: D000293:Adolescent; D006801:Humans; D008297:Male; D012512:Sarcoma, Ewing / Q000175:diagnosis*; D012888:Skull Neoplasms / Q000175:diagnosis*