Multimodal imaging for the diagnosis of oligodendroglioma associated with arteriovenous malformation: A case report

Figure 4 Histological findings. A: Examination of the neoplastic glial cells revealed a single-cell morphology, round nuclei, clear borders, moderate atypia, perinuclear haloes, rare mitotic figures (solid arrow), endothelial cell hyperplasia (open arrow), focal calcification, and patchy hemorrhage [hematoxylin and eosin (HE) stain, magnification 400 ×]; B: The tumor contained a large number of blood vessels of various sizes (asterisks; HE stain, magnification 40 ×); C: Immunohistochemical analysis showed strong cytoplasm staining for glial fibrillary acidic protein (magnification 100 ×).