Manifestation of the malignant progression of glioma following initial intracerebral hemorrhage: A case report

Figure 4 Histology and immunohistochemistry of tumor. A-C: Photomicrographs of tumor stained with hematoxylin and eosin showed diffusely arranged round cells with perinuclear haloes, akin to those seen in oligodendroglioma (magnification A: 20×; B: 40×; C: 20×); D: The tumor cells demonstrated a proliferation index of 70% by immunohistochemical staining for Ki-67 (magnification: 20×).