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. 2023 Oct 30;6(18):CASE23526. doi: 10.3171/CASE23526

FIG. 5.

FIG. 5

Histological features of astroblastoma. A: Well-developed perivascular astroblastic pseudorosettes with stout cytoplasmic processes radiating around the vessel walls (hematoxylin and eosin [H&E], Bar = 50 µm). B: Prominent perivascular and stromal sclerosis, typical of astroblastoma (H&E, Bar = 100 µm). C: Diffuse membranous reactivity for EMA (Bar = 100 µm). D: GFAP expression seen in the minority of cells (Bar = 100 µm). E: Ki-67 demonstrates 25% to 30% proliferation index in the area of highest labeling (Bar = 200 µm).