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Egyptian Journal of Neurosurgery
Fig. 3 | Egyptian Journal of Neurosurgery

Fig. 3

From: Primary pilocytic astrocytoma of cerebello-pontine angle in the pediatric age group: literature review and case report

Fig. 3

a Histopathology slide (using Hematoxylin and eosin stain) shows cells that are spread in sheets, are ovoid to spindled and with no significant nuclear atypia. Many Rosenthal fibers are noted in the background (black arrows). Immunohistochemical analysis showed positivity for GFAP (b), suggesting a glial lineage. IDH1 immunonegative (c), ATRX expression retained (d), p53 expression heterogenous (e). The Ki67 index (2%) was low (f)

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