Figure 4: Hematoxylin and eosin-stained slide of paraffin-embedded tissue (a [10 ×], b [20 ×]) shows a tumor with “pure morphology” (case 6). Tumor is well circumscribed with areas of cystic change. Tumor cells are elongated with fibrillary cytoplasm fine speckled chromatin and inconspicuous nucleoli. No perivascular rosettes were seen. A Differential of pilocytic astrocytoma and tanycytic ependymoma was kept in this case. c: Hematoxylin and eosin-stained slide (10×) of the paraffin-embedded tissue (case 4) showing “mixed morphology” with perivascular rosettes and spindled areas.