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Washington University Experience | NEOPLASMS (MENINGIOMA) | Anaplastic | 5B2 Meningioma, anaplastic (Case 5) H&E 9
The neoplasm is composed of round to ovoid cells with a moderate amount of cytoplasm. There are areas with significant nuclear atypia with prominent nucleoli, extensive tumor necrosis and 24 mitoses/10HPF.The first H&E images show a pseudo-papillary appearance contributed by areas of necrosis with perivascular sparing. (H&E)