Acute Hydrocephalus due to Secondary Leptomeningeal Dissemination of an Anaplastic Oligodendroglioma
(a) Histopathological image of the primary tumor showing moderate cellularity and a rounded, clear cytoplasm. Histological examination of the dura and the nerve roots revealed infiltration by cells of the anaplastic astrocytoma: (b) Hematoxylin-Eosin staining, magnification 250-fold. (c) Elastica-van-Gieson staining showed tumor cells within dural collagen fibers, magnification 500-fold.
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