Abstract
Introduction
Gliosarcoma is a rare, malignant, biphasic brain tumor formed by both glioblastoma and sarcomatous components. Various lines of differentiation are described in the latter component, but most commonly fibrosarcomatous and pleomophic sarcoma are present. Osteosarcomatous features are exceedingly rare.
Objective
We report a case of gliosarcoma with osteosarcomatous features in a 33-year-old woman.
Methods
Histologically, the sarcomatous portion displayed a typical pattern of fibrosarcoma associated with areas of osteoid formation.
Results and conclusion
Immunohistochemical glial fibrillary acid protein (GFAP) expression was seen only in the glioblastoma portion. Clinicopathological characteristics and radiological data of this rare condition were reviewed. Possible differential diagnoses and potential histogenesis were also discussed.
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Acknowledgement
We thank Ms. Moufida Bouyahya, who provided writing assistance.
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Comment
The authors describe a case of a gliosarcoma with an osteosarcomatous component. Although gliosarcomas are not really seldom occurrences and we already know that brain tumors can show distinct differentiations—as in the case of glial or neuronal differentiation in the case of pediatric PNETs—and although we can imagine another sarcomatous differentiation even in gliosarcomas, we nonetheless miss the real proof of their occurrence.
This case illustrates exactly what we need.
Susanne Kuhn
Friedrich Schiller University, Jena, Germany
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Charfi, S., Ayadi, L., Khabir, A. et al. Gliosarcoma with osteosarcomatous features: a short illustrated review. Acta Neurochir 151, 809–813 (2009). https://doi.org/10.1007/s00701-009-0341-2
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DOI: https://doi.org/10.1007/s00701-009-0341-2