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The Study of Glioblastoma Differentiation Possibility

The Study of Glioblastoma Differentiation Possibility

Medyanik I.A., Gordetsov А.S., Krasnikova О.V., Lobanov I.A., Radovsky V.V., Fraerman А.P., Terentiev I.G., Karyakin N.N.
Key words: glioblastoma; glioblastoma differentiation; anaplastic astrocytoma; infrared spectroscopy.
2014, volume 6, issue 2, page 93.

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The aim of the investigation was to assess the possibility of glioblastoma differentiation using infrared spectroscopy, proton magnetic resonance spectroscopy and immunohistochemistry.

Materials and Methods. 22 patients with glioblastomas and 21 patients with anaplastic astrocytomas were examined. All the patients underwent infrared spectroscopy of blood serum. 16 patients with glioblastomas were examined preoperatively and postoperatively, and in both cases 7 of them underwent proton magnetic resonance spectroscopy of tumors and identical peritumoral areas. All diagnoses were morphologically confirmed, and 10 cases with glioblastomas and 15 cases with anaplastic astrocytomas were confirmed by immunohistochemistry.

Results. Glioblastoma differentiation (Grade IV) into anaplastic astrocytomas (Grade III) was revealed postoperatively, in total glioblastoma resection and confirmed by the findings of infrared spectroscopy in blood serum, proton magnetic resonance spectroscopy of identical peritumoral areas performed preoperatively and postoperatively, as well as by immunohistochemical investigation of peritumoral area.

Conclusion. The complex of the techniques applied (infrared spectroscopy, proton magnetic resonance spectroscopy, immunohistochemistry) enables to assess how effective and total the surgery was, and if it promoted glioblastoma differentiation postoperatively, and determine how the tumor will develop after the surgery: as glioblastoma — with early continuous tumor growth, or as anaplastic astrocytoma — with the longer recurrence-free period. The findings are in agreement with tissue theory of tumor genesis; and change the understanding of the role and significance of surgical resection of glioblastomas in tumor differentiation.


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