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Washington University Experience | NEOPLASMS (EMBRYONAL) | Medulloblastoma, Histologically Defined | Classic Subtype | 6B1 Medulloblastoma (Case 6) H&E WM

6B1,2 The neoplasm consists of dense aggregates of small, primitive appearing cells, with scanty cytoplasm, hyperchromatic nuclei, common mitoses and focal necrosis. Rare cellular rosettes around a fibrillar core are noted. There is focal subpial perivascular tumor spread into adjacent folia.

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