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Washington University Experience | NEOPLASMS (MENINGIOMA) | Papillary | 3A4 Meningioma, papillary & rhabdoid (Case 3) H&E 1.jpg
Perivascular pseudorosettes and pseudopapillary formations are common. Mitoses are identified and number 4/10 high power fields at maximum (2007 specimen). Tumor cells contain abundant well delineated eosinophilic cytoplasm. The tumor cells involved in the perivascular pseudorosettes have a broad based attachment to their respective blood vessels and accordingly take on a cuboidal to columnar morphology.
