Fig. 2

Microscopic appearance of the tumor. A Image shows a tumor exhibiting an oligodendroglioma-like component predominating (hematoxylin and eosin [H&E]). B Dense calcifications seen within tumor components (H&E). C Immunopositivity demonstrated by the tumor can be seen with synaptophysin and D Glial fibrillary acidic protein—GFAP stains. E Image showing the tumor exhibiting Oligodendrocyte transcription factor 2 (OLIG2) positivity