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FIG 3. Diffuse astrocytoma. Axial enhanced T1-weighted image shows a left frontal nonenhancing lesion (A). rCBV map shows an elevated rCBV of 1.9 (B). Histologic section (400x) reveals a diffuse astrocytoma (WHO grade II), but VEGF staining shows strong cellular and endothelial positivity (C).
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