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Washington University Experience | NEOPLASMS (MENINGIOMA) | Papillary | 6C Meningioma, Papillary (Case 6) VIM 2.jpg
Tumor cells are strongly and diffusely labeled for vimentin. ---- Ancillary studies (not shown): There is only rare nuclear expression of progesterone receptor. The Ki-67 labeling index is low to focally moderate, reaching the maximum labeling index of up to 13.3%. ---- Comment: The morphologic and immunohistochemical features are consistent with the diagnosis of papillary meningioma, WHO grade 2.
