title: Infantile gliosarcoma: a case and a review of the literature.
abstract: BACKGROUND
  Gliosarcoma in infant is a very rare entity.
  
  
  METHODS
  The authors present a case of gliosarcoma in a 23-month-old boy. The patient was admitted to our hospital with persistent headache and frequent vomiting. MR imaging demonstrated a large frontal well-circumscribed lesion with a heterogeneous gadolinium enhancement. Although macroscopically the tumor was totally extirpated, the boy died of rapid tumor regrowth 2 months after surgery. The surgical specimens obtained from the tumor showed an admixture of two distinctive neoplastic tissues. One was a malignant mesenchymal feature. Its fibrosarcomatous nature was characterized by spindle-shaped cells with fine fibers that were deeply stained in silver preparations for reticulin. The other was gliomatous tissue forming islands surrounded by the sarcomatous tissues. Its glioblastomatous nature was obvious, as it was characterized by endothelial proliferation and perinecrotic pseudopalisading. Both tissues were histologically malignant, as evidenced by mitotic figure, high cellularity, atypical features, and variability.
  
  
  CONCLUSIONS
  The literature concerning gliosarcomatous tumors is reviewed, and pathological and clinical features of the tumor are briefly discussed.
authors.affiliation: Department of Neurosurgery, Ushiku Aiwa General Hospital, Ibaraki, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Okami
authors.forename: T
authors.initials: T
authors.lastname: Kawamata
authors.forename: O
authors.initials: O
authors.lastname: Kubo
authors.forename: F
authors.initials: F
authors.lastname: Yamane
authors.forename: H
authors.initials: H
authors.lastname: Kawamura
authors.forename: T
authors.initials: T
authors.lastname: Hori
mesh_terms: D001932:Brain Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D005260:Female; D005904:Glial Fibrillary Acidic Protein / Q000032:analysis; D018316:Gliosarcoma / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D014055:Tomography, Emission-Computed
chemical_list: D005904:Glial Fibrillary Acidic Protein