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Meningeal sarcoma histology. Representative meningeal sarcoma. (A) Expansile meningeal sarcoma (asterisk) in situ affected the cerebral cortex (fixed tissue, normal brain indicated with arrow; M, masseter muscle; P, hard palate). (B) Meningeal sarcoma (asterisk) invading into the cerebellum (‘C’). Scale bar: 1 mm. (C) Higher magnification of meningeal sarcoma with characteristic spindloid neoplastic cells with high mitotic index (arrow heads indicate mitotic figures). Scale bar: 250 µm.
