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Washington University Experience | NEOPLASMS (PINEAL) | Pineocytoma | 3B4 Pineocytoma (Case 3) H&E 5.jpg
3B4-6 Sections of the third ventricle mass show sheets of cells with round, uniform, hyperchromatic nuclei and a scant to moderate amount of eosinophilic fibrillary cytoplasm occasionally forming neurocytic/pineocytomatous rosettes. There are scattered cells with larger, hyperchromatic, bizarre nuclei. Mitoses are hard to find.
