The prognostic significance of vascular endothelial growth factor (VEGF C-1) immunoexpression in oligodendroglioma. An analysis of 91 cases.
Oligodendrogliomas continue to generate considerable difficulties in identifying prognostic factors, including single histopathological patterns. Among the latter, vascular productive changes have been intensively examined but the obtained results appear to be controversial. Numerous studies have revealed an indisputable importance of vascular endothelial growth factor (VEGF) immunoreactivity for malignant progression of astrocytomas but the data regarding oligodendrogliomas are heterogeneous. Ninety-one patients with oligodendroglioma were examined retrospectively for VECF immunoexpression. The results demonstrated significant preponderance of intracellular VEGF expression for WHO grade III tumors. Nevertheless, VEGF staining patterns correlated with both progression-free and overall survival only in univariate, but not in multivarite analysis. Only WHO tumor grade was found to be an independent prognostic factor for oligodendroglioma outcome. Therefore, it seems unlikely that VEGF immunohistochemistry will be of value in assessing individual oligodendroglioma prognosis, especially for determining of both progression-free and overall survival from histologically low-grade tumors.
Korshunov
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Department of Neuropathology, Neurosurgical NN Burdenko Institute, Moscow, Russia. akorshunov@nsi.ru
Golanov
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D000328:Adult; D001932:Brain Neoplasms / Q000737:chemistry* / Q000401:mortality / Q000473:pathology*; D018450:Disease Progression; D018572:Disease-Free Survival; D016228:Endothelial Growth Factors / Q000032:analysis*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008222:Lymphokines / Q000032:analysis*; D008297:Male; D008875:Middle Aged; D009837:Oligodendroglioma / Q000737:chemistry* / Q000401:mortality / Q000473:pathology*; D011237:Predictive Value of Tests; D011379:Prognosis; D016016:Proportional Hazards Models; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors
D016228:Endothelial Growth Factors; D008222:Lymphokines; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors