title: [Cerebral gliosarcoma: clinico-pathologic study of 8 cases].
abstract: BACKGROUND
  Gliosarcomas are biphasic neoplasms composed of a glioblastoma admixed to a sarcomatous component with different lines of differentiation. Histogenesis of these tumors is still discussed.
  
  
  OBJECTIVE
  Our objective is to specify clinical and pathological characteristics of this rare neoplasm and to discuss its histogenesis.
  
  
  METHODS
  Retrospective study of eight cases of gliosarcomas diagnosed between January 1998 and December 2004. Clinical, radiological, therapeutic and follow-up data were reviewed. Histological features and immunohistochemical results were also included in this review.
  
  
  RESULTS
  Five patients were male, three women with a median age of 50.7 (range 31-74 years). Symptoms were dominated by intracranial hypertension and paralysis. The most common location was parietal or temporo-parietal (5 cases: 62.5%). Pathological exam including histochemical and immunohistochemical study confirmed the diagnosis of gliosarcoma in all cases. Sarcomatous component had features of fibrosarcoma in 5 cases, osteosarcoma in 2 cases and malignant fibrous histiocytoma in 1 case. All patients were treated by surgical excision (complete in five cases and partial in three cases). Adjuvant radiotherapy was received in three cases. One patient was lost on follow-up. Two patients died from postoperative. complications and the five remaining patients died with a medium follow up of 9 months (extremes: 2-24 months).
  
  
  CONCLUSIONS
  Clinical, radiological and follow-up features of gliosarcomas share great similarities with glioblastomas. Histopathological, histochemical and immunohistochemical studies are helpful in accuracy diagnosis. Recent cytogenetic and molecular data support a monoclonal origin for these tumors.
authors.affiliation: Service d'anatomie se de cytologie pathologiques, CHU Habib Bourguiba, Sfax-Tunisie.
authors.forename: Lobna
authors.initials: L
authors.lastname: Ayadi
authors.forename: Slim
authors.initials: S
authors.lastname: Charfi
authors.forename: Abdemajid
authors.initials: A
authors.lastname: Khabir
authors.forename: Rim
authors.initials: R
authors.lastname: Kalle
authors.forename: Ahmed
authors.initials: A
authors.lastname: Sellami
authors.forename: Saloua
authors.initials: S
authors.lastname: Makni
authors.forename: Zaher
authors.initials: Z
authors.lastname: Boudawara
authors.forename: Tahya
authors.initials: T
authors.lastname: Sellami-Boudawara
mesh_terms: D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000401:mortality / Q000473:pathology* / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D018316:Gliosarcoma / Q000401:mortality / Q000473:pathology* / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D018714:Radiotherapy, Adjuvant; D012189:Retrospective Studies