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Washington University Experience | NEOPLASMS (GLIAL) | Subependymoma | 12B1 Subependymoma (Case 12) H&E whole mount 2

12B1-5 Microscopic examination shows a low-grade glial neoplasm with a nodular and lobulated architecture. The lesion shows neoplastic cells embedded within and separated by acellular areas of fibrillary processes. The neoplastic cells have round to ovoid nuclei with smooth contours and mild shape irregularities. They have open stippled chromatin and indistinct cell-cell borders. Mitoses were not observed.

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